Low Temperature Air Source Heat Pump

H.Stars offer a special product ideal for central heating in the northern region - the low temperature air source single machine double-stage heat pump. Its potential uses vary from residential areas to large commercial buildings with a square meter space of between 2000 and 10000 meters. Low ambient temperature is no barrier for this product; it can even maintain an output of up to 60 ℃ when temperatures plummet to -35 ℃ and and up to 70 ℃ when the ambient temperatures drop to -25 ℃. It is specifically suited for heating replacement requirement of old city areas. This special heat pump with screw compressor is an ideal solution to all the smog control and boiler replacement needs.

This advanced modular system offers flexible arrangement options and can be used as one unit or combined with other modules, making it suitable for varying load requirements. It functions effectively in a -25~-35 ℃ environment and provides hot water at 50 ℃, meeting all heating and cooling needs between 35-50 ℃.

Request a Quote Features Designed for frigid climates

The two-stage machine excels in operating stably at temperatures as low as -35°C. It achieves the national standard for energy efficiency during the heating season on average. Boilers can be heated to a temperature of up to 85°C, offering the perfect solution for a variety of needs from boiler radiator systems to special projects.

Screw type stand-alone two-stage compressor

In harsh winter weather, two-stage compressor paired with strong heat technology makes heating much more efficient, with an overall COP of 2.8 and notable energy savings. From -35 °C to 43 °C, the heating performance remains uncompromised.

Multiple 4-way valve combination

The novel design of this unit allows for uninterrupted operation even during defrosting, significantly boosting efficiency in real-time.

Environmentally friendly refrigerants

HFC-134a refrigerant can be used safely and effectively, with no harm to the ozone layer, ensuring it meets the exacting requirements of LEED green building standards.

Specifications

Low Temperature Air Source Heat Pump

Refrigerant: R134a
Power supply: 380V-3N-50Hz

Model	Nominal heating capacity		Compressor power input kW	Capacity control %	Refrigerant charge kg	Condenser				Evaporator / Fan			Noise level dB(A)	Shipping weight kg	Operating weight kg
	kW	USRT				Pipe diameter (inlet/outlet) in	Water flow m3/h	Design water pressure MPa	Water pressure drop kPa	Quantity	Air flow m3/h	Power kW
80HW-M250CDH4	211	60	98	10 50 100	80	3″	36	1	50	8	124000	10	75	4500	4700
80HW-M300CDH4	239	68	108		100	4″	41	1	52	8	160800	16	75	5000	5200
80HW-M350CDH4	307	87	148	0 50	120	4″	53	1	52	8	160800	16	75	5500	5700
80HW-M450CDH4	369	105	177	75 100	150	4″	64	1	54	8	160800	16	75	6000	6200

Notes:

1. Rated capacity standard: air dry / wet bulb temperature -12℃ /-14℃, hot water inlet/outlet temperature 60℃ /65℃, fouling factor 0.088 ㎡•℃ /kW; 2. Hot water temperature range: 55℃ ~85℃; 3. Ambient temperature range: -30℃ ~30℃ Optional Variable frequency heat pump unit

The variable frequency heat pump unit is a modern unit which incorporates both a frequency converter and existing unit operations in order to achieve frequency conversion compressor. With this upgrade, its energy efficiency is drastically improved at partial loads, making it a truly transformative double efficient unit capable of reaching full load efficiency (COP) as well as a intergrated part-load value (IPLV).

Heat exchanger tube Cloud services Electric auxiliary heater

In cold climates where the outdoor heat rating is significantly low, the heating capacity and efficiency of the heat pump can be substantially diminished. To counter this, an auxiliary heat source is advised, making the electric heater the ideal choice.