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Small Ground Source Heat Pump

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Hot Line：400-0530-636

Tel：+86-530-7355311

E-mail：zhangteng@c-jsec.com

heguowaimao@163.com

Fax：+86-530-7355311

Add：Heze City, Shandong Province, China

Small Ground Source Heat Pump

The small ground source heat pump unit is one of a series of central air-conditioning products developed by Zhongkeneng Air Conditioning Co.,Ltd.This unit develops and utilizes low-grade renewable energy that is inexhaustible underground(or surface).

Product Description

Introduction of small ground source heat pump unit

The small-scale ground source heat pump unit is a mature shaped product developed on the basis of fully absorbing the latest development technology in the international and domestic air-conditioning field.The unit is designed and manufactured strictly in accordance with national industry standards,and selected high-quality,famous brand compressors,water pumps,refrigerant system control components and computer control components produced by world-renowned manufacturers.The operation has nothing to do with the ambient temperature,so that the unit can operate efficiently and stably anywhere.

Small ground source heat pump units usually have no heating boiler,no heating network or other stable and reliable heat source,but they also require the preferred option in the heating engineering design of air conditioning throughout the year.This unit can form a semi-centralized air conditioning system together with fan coil or cabinet type,ceiling type air handler and new fan unit.

There are various forms of heat sources for small ground source heat pump units.When designing the unit,consider different operating conditions,conduct comprehensive design,and reasonably match,so that the unit can operate stably and efficiently under different operating conditions,and meet the requirements of different projects to the greatest extent.

Application

　　The unit is widely used in hotels,shopping malls,office buildings,villas and other small and medium-sized places for comfortable central air-conditioning systems.Pharmaceutical,biological,and other smaller places require a higher level of process air conditioning systems.

Features

1. Wide selection

（1）The single unit cooling capacity of this series is from 15kW to 75kW,and the cooling capacity is tightly and evenly distributed.The user can tailor it,and the cooling capacity is wide;

（2）The water temperature on the heat source side of this series of units is-10℃～35℃,and the water temperature on the use side is-5℃～50℃,which can run stably and efficiently,and the unit operates in a wide range;

（3）This series of units integrate refrigeration,heating and sanitary hot water into one,which can cool,heat and supply domestic hot water.The unit has a wide range of application functions;

（4）This series of units have R22,R407C refrigerant to provide options

2. Advanced technology

This series of units use a variety of advanced air-conditioning technologies,such as multi-energy level regulation;unique heat pump built-in heat recovery technology;efficient and accurate unit waterside antifreeze……

3. Smooth running,quiet and low noise

The unit adopts high-efficiency fully-enclosed scroll compressor, horizontal multi-stage centrifugal pump, fully enclosed structural shell, low noise and stable operation.

4. Excellent heat source,stable operation

As a low-temperature heat source,the water temperature is relatively stable all the year round,and its fluctuation range is far less than the fluctuation of air temperature,which makes the operation of the unit more stable and reliable,and also ensures the efficiency and economy of the system.There is no such difficult problems as defrosting in winter and heat reduction of the air source heat pump unit.

5. Digital centralized control,accurate and efficient

The compressor,water pump,refrigeration system accessories and electric control components used in the unit are all products of famous companies at home and abroad,with accurate control and reliable performance.The operation interface of the controller is friendly,and the user can know the operation of the unit at any time.With high automation and complete functions,the unit can realize the functions of start and stop program management,timing control,fault alarm and fault self diagnosis.At the same time,it can be equipped with RS485/RS232 communication interface(optional),which is convenient for users to realize the centralized monitoring and remote monitoring of the unit.

6. Complete protection,safe and reliable

The unit is equipped with high-pressure,low-pressure switch,overload relay,phase sequence protector,antifreeze protection,delay start and other protection devices to ensure the safe and reliable operation of the main engine.

7. Simple installation and complete functions

The internal reversing of the refrigeration system and the external refrigerant system do not need the change-over valve of cooling and heating,which makes the installation of the whole air conditioning system simple and clean,as the operation of home air conditioning is convenient. The unit can be installed and fixed only by making simple cement foundation.

8. Clean and environmental protection,high efficiency and energy saving

This series of units take water as the cold and heat source,the operation efficiency is higher than that of air source heat pump units, cop is above 5.4, and it is awarded the title of"energy saving star".During cooling,the cooling tower is omitted to avoid noise and mound pollution of the cooling tower;during heating,there is no combustion process,no waste residue, waste water,exhaust gas and smoke exhaust,and coal,oil,gas boilers and boiler rooms are omitted to make the environment more beautiful.

Parameters of Small Size Ground Source Heat Pump

Comparison table of the unit's two operating conditions (ground well water, buried pipe)
Model CTEDB series		R22 single unit series
Model CTEDB series		12F2	16F2	20F2	30F2	43F2	50F2	65F2
Ground water condition	Cooling capacity(kW)	12	15.8	19.7	30.1	43	50.5	64.7
	Cooling input power(kW)	2.4	3	3.5	5.35	7.6	9.2	11.6
	Heating capacity(kW)	13.8	18.1	21.5	32.9	45.6	54.1	72
	Heating input power(kW)	3.4	4.2	4.88	7.1	10.1	12.4	15.6
	Heat source side water flow(m³/h)	1.28	1.47	1.81	2.77	3.96	4.67	5.96
	Use side water flow(m³/h)	2.37	2.72	3.39	5.18	7.39	8.68	11.13
Underground pipe working conditions	Cooling capacity(kW)	12	15.8	19.7	30.1	43	50.5	64.7
	Cooling input power(kW)	2.4	3	3.5	5.4	7.6	9.2	11.6
	Heating capacity(kW)	11.3	14.8	17.6	27	37.4	44.4	59
	Heating input power(kW)	3.38	4.16	4.83	7.03	10	12.28	15.44
	Heat source side water flow(m³/h)	2.48	3.2	4	6.1	8.7	10.3	13.1
	Use side water flow(m³/h)	2.06	2.7	3.4	5.2	7.4	8.7	11.1

Note:

1) Standard refrigeration: use side inlet / outlet temperature 12 / 7 ℃; standard heating: use side inlet / outlet temperature 40 / 45 ℃.

2) Underground well water condition: Refrigeration: inlet / outlet temperature of heat source side is 18 / 29 ℃; heating: inlet / outlet temperature of heat source side is 15 / 8 ℃; the temperature of inlet / outlet water at heat source side is 15 / 8 ℃;

3) Working condition of buried pipe: Refrigeration: inlet / outlet temperature of heat source side is 25 / 30 ℃; heating: inlet / outlet temperature of heat source side is 8 / 4 ℃.

Technical performance parameter table
Model CTEDB series			R22 single unit series
Model CTEDB series			12F2	16F2	20F2	30F2	43F2	50F2	65F2
Nominal cooling capacity		kW	12	15.8	19.7	30.1	43	50.5	64.7
Nominal heating capacity		kW	13.8	18.1	21.5	32.9	45.6	54.1	72
Refrigerant	Type	--	R22
Refrigerant	Charge Amount	kg	1.5	1.7	2.0	1.7*2	2.0*2	1.7*3	2.0*3
Power type		V/PH/Hz	380/3/50
Compressor	Type	--	Fully enclosed scroll
	Number	--	1	1	1	2	2	3	3
	Input power(kW)	Refrigeration	2.4	3	3.5	5.35	7.6	9.2	11.6
	Input power(kW)	Heating	3.4	4.2	4.88	7.1	10.1	12.4	15.6
Use side heat exchanger	Type	--	High-efficiency casing heat exchanger
	Water side resistance	kPa	40	42	44	42	43	45	46
	Water flow	m3/h	2.37	2.72	3.39	5.18	7.39	8.68	11.13
	Connection size	in	R₁1	R₁1	R₁1	R₁3/2	R₁3/2	R₁2	R₁2
Heat source side heat exchanger	Type	--	High-efficiency casing heat exchanger
	Water side resistance	kPa	20	21	22	20	21	22	24
	Water flow	m3/h	1.28	1.47	1.81	2.77	3.96	4.67	5.96
	Connection size	in	R₁1	R₁1	R₁1	R₁3/2	R₁3/2	R₁2	R₁2
Dimension	Length	mm	680	680	680	1100	1100	1300	1300
	Width	mm	540	540	540	660	660	910	910
	Height	mm	817	817	817	1200	1200	1200	1200
Shipping weight		kg	180	200	220	300	375	450	540
Noise		dB(A)	60	60	61	62	63	63	63

Note:

1) The noise is measured at 1 meter away from the surface of the unit, and the height is 1 / 2 of the total height of the unit plus 1 m, and the compressor is under full load operation condition;

2) The cooling capacity of the unit is determined as follows: inlet / outlet temperature of heat source side is 18 / 29 ℃, inlet / outlet temperature of service side is 12 / 7 ℃;

3) The heating capacity of the unit is determined as follows: the inlet / outlet temperature of the heat source side is 15 / 8 ℃, the inlet / outlet temperature of the service side is 40 / 45 ℃;

4) The data are for reference only and subject to change without notice.

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