As a professional electric bus air conditioner manufacturer in China, CLING bus HVAC offers all kinds of bus air conditioner solutions for 6-25m bus, citybus, coach, school bus, shuttle bus, special v

06-Dec-2024 0Comments

Introduction to CO2 refrigerant and CO2 Heat Pump Bus AC Products

With the development of heat pump A/C technologies and the continuous promotion of environmental laws and regulations such as Global Climate Convention and Kigali Amendment, CO2 refrigerant is an ideal solution with global warming potential (also known as greenhouse effect) of 1, to solve the problem of global warming caused by heat pump A/C refrigerant and low temperature adaptability of heat pump A/C. The natural working medium CO2 is a kind of refrigerant that does not damage the ozone layer and has a small greenhouse effect coefficient. Carbon dioxide is a refrigerant that will never be outdated.

cling electric bus air conditioner co2 r744 bus air conditioner

Characteristics of CO2 refrigerant:

1. CO2 is a natural working medium (ODP=0, GWP=1), with good safety, non-toxicity and non-combustibility;

2. Large latent heat of evaporation and high cooling capacity per unit volume;

3. Excellent fluidity and heat transfer performance;

4. Low filling volume and low shaft power consumption;

5. Good chemical stability and few chemical reactions of related materials;

6. Higher operating pressure;

7. The critical point is at a lower temperature: 31.1°C;

8. CO2 is heavier than air, and the mixed gas generated in a sealed space can be suffocating;

9. TLV safety limit: 25ppm for ammonia and 5000PPM (0.5%) for CO2

Up to now, Cling has independently developed and researched CO2 heat pump air conditioning systems. Cling has iteratively developed CO2 heat pump integrated A/C products.

The technical indicators of the Cling CO2 heat pump air conditioning systems are as follows:

1. Refrigeration standard condition, refrigerating capacity up to 26KW, COP1.9;

2. Heating standard condition, heating capacity up to 28KW, COP2.4;

3. Low-temperature heating, heating capacity up to 15KW, COP1.6;

4. Under ultra-low temperature of -30°C, the unit operates normally without abnormality.
The cases of Cling CO2 air conditioners on buses

Looking back on the technology research and development process of Cling in heat pump A/C system, there are two main lines running through, from 2009 when Cling took the lead in developing the first generation of bus electric A/C in the industry to now. First, make the heat pump A/C more efficient and energy-saving and can operate at a lower ambient temperature; Second, the heat pump A/C is taken as the core of vehicle thermal management for multi-functional integration and coupling control to improve the empowerment level of the heat pump system.

In terms of heat pump air conditioning, after years of iterative updates, Cling has mastered the application of air makeup and enthalpy increase technology in bus & coach air conditioning, realizing low-temperature heating at -20 ~ -25°C. The successful development of carbon dioxide heat pump air conditioning products has further reduced the applicable ambient temperature of heat pump air conditioning products to -25~-30°C, which is more environmentally friendly and energy-saving in low-temperature operation.

If you have any questions about our bus a/c units please don't hesitate to contact us.

E-mail: marketing@clingac.com

WhatsApp: +86 18736032501

Phone: +86 18736032501

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