Are you drafting a proposal?

Texair can provide full scope support anytime and anywhere. We have the professional experience to provide planning and design services.


• Texair can provide cost effective and optimized

   proposal base on client’s specific requirements;


• Conceptual design integrations based on

   customer’s requirements and needs into factory

   layout plan;


• Forms follows function is the design principle

   behind efficient production design;

• Machinery layout plan;

• To suggest air conditioning structural design


• To design waste management system and air

   conditioning system;


• To satisfy the facilities’ technical requirements

   and to cooperate with related works;

• Execute, collaborate, supervise construction and


Task Execution

• Construction according to drawings;

• Assisting related technical issues;

• Construction supervision and testing;

Special Works

• After sales services;

• Employees training;

• System upgrading services;

Air Conditioning System

Option 1:

Air in production room are supplied by air-conditioned stations.   Air volume is primarily determined by and the largest machine heat and relative humidity.   Other factor also includes the best utilization of the required machine output, the largest motor heat, and other heat source like roofing, lighting and etc.

Most of the design and calculation are completed by computer.   Other special specification can be chosen with most economical systems and equipment.

In order to reduce the summer interior temperature, chilled water will be delivered to the air with spray washing room way to the required degree of air-cooled, and then by air to the air supply pipe of the production workshop.

From a variety of studies have indicated that ring mill at the room temperature of 28°C is able to make workers feel comfortable, the temperature can also make the engines running to maximum efficiency.

When the system is running with recirculation air, the temperature can be maintained throughout the summer season. All devices are equipped with hot enthalpy; the air-conditioning system will be automatically converted to run with the new wind. Therefore, can reduce the consumption of cooling capacity, while set minus freezer, and substantial energy savings.

During winter when mechanical cooling isn't needed, the fresh air mixed with return air humidification by air washer room to the workshop.

Option 2:

The air output of the workshop is supplied by the air conditioning station, which is calculated primarily based on the heating quantity, temperature and humidity of the machine. The use of the latest intelligent control can achieve the high efficiency of system and equipment operation.

The equipment uses energy-saving control method on the basis of seasons changing to reduce heat loss, and sends the air to the production workshop by air ducts after tempering.

When production workshop is controlled under constant temperature and humidity, staff will feel more comfortable thus improve work efficiency.

An energy saving device is used to reduce the energy consumption of the chiller or boiler during operation. The heat recovery device can be used to recycle the heat loss.

A/C Control Room




A/C unit with Temperature & Humidity Control


  Outside Air


  Return Air


  Supply Air


  Exhaust Air

In general, humidity, temperature and/or pressure are perception conditions that are monitored and delivered to controller (PID) for calculation. PID is used as an energy saving device.

Air Shower Room:

When the staff entering the cleanroom, the air shower room can blow away dust from the clothes, equipment, materials and tools. Meanwhile, its air lock function can effectively provide buffering for the workers entering and exiting the dust-free workshop and can also prevent cross contamination.

Pass Box:

The pass box is a device placed in partition wall of the dust-free workshop, providing a buffer for inside and outside goods passing, minimizing the contaminations of airflow and cell pressure of the dust-free workshop during goods passing, preventing the dust flow into the region and reducing the risk of cross contamination.

Clean Booth / Dust-free workshop:

• Can achieve Class 10 – 10,000 level in accordance to client’s requirements.

• Its size can be tailored made to actual needs of customers.

Management of the dust-free workshop:

• Temperature and humidity control;

• Air pressure control;

• Airflow speed management;

• Energy saving management;

• Dust-free clothing, packaging and cleaning requirements;

• Continuous training of staff and optimizing management system;


Testing standard for dust-free workshop:  FS209E Standard  &  ISO 14644 Standard

Purpose of Clean Room Technology (English only)

Purpose of Clean Room Technology

Numerous operations in research, industry and medicine require an extremely clean environment in terms of dust and micro-organisms for their accomplishment.

The liberation of the finest particles by working processes and people is so intensive, that conventional air conditioning engineering, even with the most efficient filters, cannot guarantee the required air purities.

Clean room technology came into being to close this market gap.

The purpose of clean room technology is to supply to workplaces, -air cleaned as extensively as possible of dust and micro-organisms, and to maintain the desired state of controlled air purity there – for the good of the working man and the quality assurance of the products.

Clean Room and Their Quality Gradation

Clean rooms are defined area in which the particle concentration in the room is kept under control by suitable measures.

Internationally recognized standards – the US Federal Standard 209b and the German guideline VDI 2083 – with their field-proven findings, provide a precise basis for planning, construction and operation of clean room installations. Within these standards, purity grades for identifying the quality of clean room systems are defined which prescribe limiting values for the particle concentration in the room during its normal use.

Supplementary rules exist for specific fields of applications, as for example the guidelines concerning the requirements of biological air purity in hospitals. To fulfill the requirements made by clean room technology of air purity, filtration and aerodynamic measures are necessary.

Clean Room Grade

Max. Permitted Dust Level


US Fed. Std.

Particles per X³ Air



> 0.5µm

> 5µm






















Division into clean room grades according to German and American determination (


not evaluated for statistical reasons).

Air Filtration

Even the finest suspended particles (0.3 to 1µm) have a disturbing effect on numerous working and manufacturing processes.

In order to be able to meet the required air purities, HEPA (High Efficiency Particulate Air) filters of the highest quality are necessary. Such filters are distinguished by a minimum degree of separation of 99.97% measured with a paraffin oil spray with particle diameter of 0.3-0.5µm. The quality of the filter installation must be proven by a leak test after installation.

As manufacturers of HEPA filters for many years, Luwa takes its place among the pioneers of clean room filter technology with many years of experience.

Turbulent Mixed Flow and Laminar Flow

In order to be able to ensure the required air purity not only in the supply air, but also at the work-place to be protected. There are two principles of air distribution:

• the turbulent mixed flow, by which the filtered supply air entering the room, is almost ideally mixed, by induction,

   with the room air: this results in the air impurities liberated in the room to be diluted.

• the low-turbulence displacement flow or laminar flow, by which the air moves on parallel streamlines at uniform

   speed: the liberated impurities are directly transported out of the room.

The requirements of the purity grades 5 and 6 (resp. 10.000 and 100.000) can generally be met with the aid of the turbulent mixed flow. On the other hand, the extreme demands of air purity of grades 3 and 4 (resp. 100 and 1000) require the application of low-turbulence displacement or laminar flow.

System Selection

The broad spectrum of demands on clean room systems leas to a great diversity of possible solutions. From the wide range of possibilities, the best concept must be individually worked out for each application. For this purpose, Luwa specialists do not only make their clean room expertise available, but also the required knowledge of application technology supported by many years’ experience.

Conventional Clean Room

Clean rooms of grades 5 and 6 (resp. 10.000 and 100.000) are equipped with Luwa Filtrasept air outlets and Luwa filter ducts. The turbulent mixed flow with filtered supply air and induced room air causes a dilution of the liberated air impurities.

Clean room with defined high-purity working areas

Clean rooms of grades 3 or 4 (resp. 100 and 1.000) with Luwa clean air distributors type CG for vertical or horizontal laminar flow with or without lateral limitation of air distribution. The discharged air keeps the surrounding room as well as the air locks or cloakrooms clean.

Clean Tunnel

Clean rooms of grade 3 (resp. 100), with the entire ceiling and wall surface fitted with Luwa clean room filters or Luwa clean air distributors type CG. Thanks to the low-turbulence displacement flow, they satisfy the highest demands of air purity in an extended working area.

Clean Room Units

Clean room units of various concepts for measuring and test rooms as well as for the elimination of cross contamination in processing highly active ingredients in the pharmaceutical industry. Equipped with multistage Luwa Ultra-filters and the Luwa clean air distributor type CG, they are distinguished by a great adaptability thanks for their utilization of standardized elements.

Pharmaceutical Industry (English only)

Pharmaceutical Industry

The pharmaceutical industry processes a diverse spectrum of active ingredients into highly effective medicaments, which are dispensed in numerous forms such as tablets, effervescent tablets, injection solutions etc. Therefore, in manufacture, packing and final control strict quality and purity specifications have to be maintained.

The air engineering plants for research and manufacture in the pharmaceutical industry have to satisfy the most varied requirements, so that their division into numerous subsystems is necessary. The planning of complete plants presupposes a wide range of experience and specialist knowledge in application technology.

Within this framework clean room installations have to ensure,

   - that the sterility of injection solution (which do not often permit a subsequent heat sterilization) remains

      guaranteed during the entire processing and packing,

   - that the pollution of preparation by agent foreign to the product is impossible, and

   - that the protection of personnel entrusted with the manipulator of highly active ingredients, is ensured at all times.

The Luwa clean room systems individually adjusted to the respective conditions allow the protection of critical processing stages at favorable investment and operating costs.

Manufacture of Microelectronic Components (English only)

Manufacture of Microelectronic Components

The miniaturization of electronic modules enables the accommodation of a large number of functional units in the smallest space and the achievement of extremely short switching times. It thereby forms the basis for the remarkable improvements in products of the electronics industry with regard to price and efficiency.

Clean raw material, clean working media and a clean workplace environment are indispensable prerequisites for these results.

The contribution of Luwa clean room technology to this are energy-optimized system solutions, which are exactly adapted to the respective manufacturing conditions and in addition can be flexibly adjusted to the frequent process changes.

Research in Micro-technique (English only)

Research in Micro-technique

The accelerated development in micro technique is based on intensive research aimed at basic principles and production processes for manufacturing novel integrated circuits and storage elements.

Clean room systems are an absolute necessity for carrying out experimental investigations in this field. In addition to the extreme requirements of air purity the closest temperature tolerances have also to be met for the perfect operation of highly sensitive measuring instruments. Beyond meeting these demands Luwa clean room installations are eminently suited for this field of application because of their high adaptability and flexibility towards the constantly changing experimental programs.

(Spinning and chemical industries) Types of fibers:

   Divided according to the traditional textile factory:

          Spinning, weaving, yarn dyeing, water-jet weaving, circular weaving...

   Divided according to the chemical fiber factory:

          Long and short fiber, extended filament, false twist, elastic fiber...

   Divided according to the raw material:

          Natural fiber, synthetic fiber, hybrid fiber, flax fiber yarn, wool fiber, glass fiber...

   Divided according to comprehensive consideration:

          Appropriate design scheme should be formulated in accordance with the various types of fiber manufactured by

          each industrial to meet the quality requirements for human or industrial yarn.

   Divided according to market demand for products:

          Create superior products with diversities.

   Divided according to customized market demand:

          Produce cost-effective products.


Intelligent energy saving concept of air conditioning

Conventional air conditioning uses fixed load as the concept of fixed output power to maintain the air temperature, humidity, and dust quality. This is a high cost for guarantying the quality.

Nowadays, the latest technology on A/C intelligent development enables energy-saving while maintain high air quality.


1. Intelligent energy saving concept of air conditioning

Conventional air conditioning uses fixed load as the concept of fixed output power to maintain the air temperature, humidity, and dust quality. This is a high cost for guarantying the quality.

Nowadays, the leading development of industrial equipment creates different ways of usage. That is, the intelligent and energy-saving output power can be used to maintain the air quality, which can save 10-30% of the costs (average energy saving in summer is 10%, by 30% in winter). So we can maintain quality assurance and reduce the basic electric cost expenditure.

In the existing industrial scope, the proposal can be optimized. Or at the initial stage of the construction of the program, optimization of professional programs for energy conservation may be proposed, and the cost could be recycled in 3 years.


We look forward to assist you. Let us create market opportunities, mutual benefit and common prosperity together.

Scope of application: any actuator, mechanical and electrical equipment.

2. Energy saving concept of the air conditioning heat pumps

The heat pumps use compressors to separate the two energy level of “hot and cold”, and then take use of energy of both levels. In the general environment, cold source air conditioning is used while the one for heat is abandoned. Heat pump concept design is used and the heat source could be fully recovered as hot water storage ( 55°c of temperature is used ). Or the optional independent heat pump system in the industrial process can be equipped to achieve the temperature of 85°c.

In theory, an electrical energy unit ( kw/hr. ) can produce 860 Kcal/hr. heat.

The following can be achieved if the heat pump system is used:

      Hot side energy = compressor power X 4.

      Cold side energy = compressor power X 3.

If the energy from both sides is used at the same time, the efficiency can reach up to 7 times.

For example:

      The thermal efficiency of 1 kw compressor can be converted to a ton of cold USRT ( general use of air conditioning ) .

Hot side energy:

      To heat up a liter of 20°c water to 55°c, at the capacity of 98 liter/hour.

Cold side energy:

      To cool down a liter of 12°c water to 7°c, at the capacity of 600 liter/hour.

Other Advantages:

   Under reasonable use, prolonging utility service lifespan is possible;

   It is easy to maintain and the cost is low;


According to the production conditions, the recovery period is adjusted accordingly. Under circumstances, the recovery period may also be shortened along with frequent


Energy selection and environmental conditions

With consideration of various conditions and characteristics to achieve the most efficiency design.


• Considering unique features of geographical location, climatic and environmental characteristics;

• Considering of local energy prices and supply;

• Considering the process requirements of the products production;

• Maximizing the use of low-priced energy and enhance the use of thermal efficiency;

Dust concentration treatment

According to different industry's standards and design the proper dust treatment units


Spinning industry and chemical fiber industry:

According to the raw material analysis on fiber product [ method of specific gravity ], it is divided into four simple instructions for planning FDA Collection System.

     Heavy concentration..

        Such as the high amount of sand in the initial processing of wool and linen.

     Medium concentration..

        Such as medium amount of sand in the initial processing of cotton and artificial fiber.

     Low concentration..

        Such as low amount of sand in the initial processing of cotton and blended fibers.

     Light concentration..

        Such as light amount of sand in cotton fiber and synthetic fibers.

Other Industries:

Dust concentration analysis (colorimetric method).



  Return Air


  Continuous dust removal room


  Supply Air


  Blow Fan


  Pneumatic Switch Valve




  Continuous dust removal system


  Rotary Air Filter


  Dust Filtration Control


  Dust bag group


  Fiber compressor




Ventilation and energy saving treatment

By using thermal enthalpy control, system control, and heat recovery to archieve energy efficience.


Thermal enthalpy control:

        Make the best use of geographic advantages of local weather and climate to obtain the

        cold source and heat source in the air.

        Automatically switch to reduce the energy loss of power.

Control System:

        To reduce heat losses: decrease low humidity air and/or discharge air with low enthalpy from the system.

Heat Recovery Treatment:

        Utiliziing heat recovery system to recover the heat source of discharged air from the system.


Wet Processing

To remove impurities in foul air and regulate temperature.


• Impurities in Foul Air..

        Use clean water to remove impurities in the air. And use recycled water for re-filtering so as to minimize water


• Air Enthalpy Control..

        ​Increase the chilled water temperature to meet the demands of the workshop environment.

        Use the optimized equipment to improve thermal efficiency and save energy.

Humidification Unit

It can improve the dust removal effect in the workshop. At the same time, it can improve working conditions more hygienic as well as raise the flash points for fire protection in the workshops. These characteristics can be applied in different fields.



Humidification unit can ensure that the relative humidity of the air reaches RH 75%, and the difference RH in the entire plant is within ±3%.

It can improve the dust removal effect in the workshop. At the same time, it can improve working conditions more hygienic as well as raise the flash points for fire protection in the workshops. These characteristics can be applied in different fields.

Comparison between humidification air duct and dry air duct system:

• Low manufacturing cost. Reducing the circulation air volume of about 50% can also lower operation electrical cost by

   almost 50%.

• The area that equipment occupied in the workshop is reduced, for it only occupies the air duct space.

• In the arid area, the direct cooling and humidifying effect is obvious. Therefore, the water chilling unit is not needed.


Distribution of the air duct system

Proper design according to air flow, travel distance, and change in temperature.


• The air flow in the workshop is distributed reasonably, which regulates the temperature and the humidity.

• The resistance value is rationally analyzed for smooth operation of the air conditioning ducts.

• Extra insulation can prevent heat dissipation due to temperature differences in the workshop.


Plan Execution

Construction according to drawings, assisting related technical issues, and Construction supervision and testing.


• Work schedule can be provided base on client’s schedule.

• Equipment production, transportation and installation should be on the basis of plan and schedule.

• Construction and installation execution in accordance with the main contractor.

• Inspection and acceptance by the client.

• Testing / training / formal operation.

Q & A










2F. No.55, Lane 119, North Lin Sen Road,

Taipei, Taiwan




No.16, Lane 85, Yong Ping Road,

Yangmei City, Taoyuan, Taiwan