A cooling tower is an installation that retreats heat from water by evaporation or conduction.
The industries use cooling water in various processes. As a result, there are also various types of cooling towers. There are cooling towers that create process water that can only be used once, before it is discharged. There are also cooling towers that create water that can be reintoduced in the production process.

Freshwater or central cooling system: Fresh water is used in a closed circuit to cool down the engine room machinery. The fresh water returning from the heat exchanger after cooling the machinery is further cooled by sea water in a sea-water cooler.
As discussed above, in the central cooling system, all the working machinery on ships are cooled down using circulating fresh water. This system comprises of three different circuits

As discussed above, in the central cooling system, all the working machinery on ships are cooled down using circulating fresh water. This system comprises of three different circuits

The most common central cooling system is a split system, which includes an outdoor cabinet containing a condenser coil and compressor, and an indoor evaporator coil, usually installed in conjunction with your furnace or air handler. The compressor pumps a chemical called refrigerant through the system.
emperature control of the process can be affected using electric, pneumatic, electro-pneumatic and self-acting controls. This Module details some common applications including process vessels, heat exchangers and high temperature fail safe control.
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Company Profile

GINDAI was found in 1952. GINDAI has been dedicated to improving the technique of refrigeration and quality of products for more than 60 years. We have sold worldwide over 40 countries. With 4 business concepts, which are innovation, service, quality and customer first, we provide most excellent brand image and comprehensive service. In the field of machine tool, plastics, semiconductor industry and centralized cooling system, GINDAI insists on innovative research and development. In 2001, the branch company was established in Shanghai. We hope we can be outstanding in the future markets and pioneer the new business with customers.

New factory planning
Due to the limited space of the plant in Tainan Xinying, a new factory will be built in Yongkang Technology Park in 2019.

Gobal marketing
In 2018, we create a brand new logo for GINDAI, called GD COLDER. It has been over 60 years in this industry. We not only focus on our proficiency in making chillers and temperature controllers, GD COLDER also provides you professional management of cold and warm temperature control, custom-made service and centralized cooling system in the future.

Discover who we are: GD COLDER Company Profile 2018
Innovation

Innovation

Customer, quality, service, innovation, professional

Discover who we are: GD COLDER Company Profile 2018
Service First

Service First

We satisfy customer’s demand and improve satisfaction with professional service.

Discover who we are: GD COLDER Company Profile 2018
Quality First

Quality First

With high quality products, we upgrade customer’s value and raise the competitiveness.

Discover who we are: GD COLDER Company Profile 2018
Customer First

Customer First

We implement the “customized products” and improve satisfaction, which is our first goal.

Starting a business In 1952, we specialized in the installation and maintenance of refrigeration engineering equipment (A-Rui refrigeration units repair shop) 1952 SPecialize in design Specialize in design and manufacture with the air-conditioner equipment. Gradually transfer to produce for industrial use cooling equipment for the main products. 1978 HWANG-LIH FREEZE AIR-CONDITION MACHINE was established In 1989, HWANG-LIH FREEZE AIR-CONDITION MACHINE CO., LTD. was established, manufacturing industrial ice-making machines, cooler manufacturing, and industrial chillers. 1989 2000 GIN-DAI was established In 2000, GIN-DAI PRECISION TECHNOLOGY CO., LTD. was established, manufacturing precise industrial cooling machine, temperature controllers and chillers. branch office was established In 2001, the branch office was established in Shanghai. 2001 2007 blown film cooler & mold temperature controller In 2007, we also produce blown film cooler and mold temperature controllers. 2018 High quality, continuous innovation The logo of Gin-Dai rebranded in 2018. In the future GD COLDER will start to build a new factory in Yongkang Technology Park. It is estimated to be completed in 2023. In the future
1952

STARTING A BUSINESS

In 1952, we specialized in the installation and maintenance of refrigeration engineering equipment (A-Rui refrigeration units repair shop)

1978

SPECIALIZE IN DESIGN

Specialize in design and manufacture with the air-conditioner equipment. Gradually transfer to produce for industrial use cooling equipment for the main products.

1989

HWANG-LIH FREEZE AIR-CONDITION MACHINE WAS ESTABLISHED

In 1989, HWANG-LIH FREEZE AIR-CONDITION MACHINE CO., LTD. was established, manufacturing industrial ice-making machines, cooler manufacturing, and industrial chillers.

2000

GIN-DAI WAS ESTABLISHED

In 2000, GIN-DAI PRECISION TECHNOLOGY CO., LTD. was established, manufacturing precise industrial cooling machine, temperature controllers and chillers.

2001

BRANCH OFFICE WAS ESTABLISHED

In 2001, the branch office was established in Shanghai.

2007

BLOWN FILM COOLER & MOLD TEMPERATURE CONTROLLER

In 2007, we also produce blown film cooler and mold temperature controllers.

2018

HIGH QUALITY, CONTINUOUS INNOVATION

The logo of Gin-Dai rebranded in 2018.

Future

IN THE FUTURE

GD COLDER will start to build a new factory in Yongkang Technology Park. It is estimated to be completed in 2023.

Temperature controllers are needed in any situation requiring a given temperature be kept stable. This can be in a situation where an object is required to be heated, cooled or both and to remain at the target temperature (setpoint), regardless of the changing environment around it. There are two fundamental types of temperature control; open loop and closed loop control. Open loop is the most basic form and applies continuous heating/cooling with no regard for the actual temperature output. It is analogous to the internal heating system in a car. On a cold day, you may need to turn the heat on to full to warm the car to 75°. However, during warmer weather, the same setting would leave the inside of the car much warmer than the desired 75°.

For example, in a temperature control system, a high fixed alarm prevents a heat source from damaging equipment by de-energizing the source if the temperature exceeds some setpoint value. A low fixed alarm, on the other hand, may be set if a low temperature could damage equipment by freezing.

Temperature controllers are measurement devices used for temperature control. Dividing into thermocouple-type and resistor-type, the electronic temperature controllers obtain the temperature change from the sensor and send the measured data to the electronic processor. The output device will then control the temperature variation within a specific range.

Due to the fact that water is environmentally safe, abundant, easy to handle, and provides much better heat transfer than air, it is the most practical and commonly used medium for cooling of industrial processes. However, the effective use of water for cooling applications results in challenges in design and operation. Most components in a cooling water system are constructed from metallic materials, especially heat transfer equipment. These components can suffer failures due to many forms of corrosion, cracking, and other damage mechanisms. Nonmetallic components in the cooling water system may also experience degradation and failure. The varied types of damage are caused by differences in cooling water system design, temperature, flow, water chemistry, alloy composition, and operation.

A temperature controller is an instrument used to control temperature calculating the difference between a setpoint and a measured temperature. The controller takes an input from a temperature sensor and has an output that is connected to a control element such as a heater or fan.

To accurately control process temperature without extensive operator involvement, a temperature control system relies upon a controller, which accepts a temperature sensor such as a thermocouple or RTD as input. It compares the actual temperature to the desired control temperature, or setpoint, and provides an output to a control element. The temperature controller or thermostat is one part of the entire control system, and the whole system should be analyzed in selecting the proper equipment.