Water to water heat pump
● Energy saving and environment friendly product
Daishiba water source heat pump utilizes free renewable energy from ground, consuming much less energy without direct CO2 emission. It is efficient and economical alternative to both fossil fuel boilers and air-conditioning systems.
This system are free from the effect of climate, it can run at rough conditions with high COP. Compared with common electric heater or gas boiler, water source heat pump reduces costs more than 75%.
● Flexible applicability
DAISHIBA water to water heat pump series can be applied in the independent and small scale space, such as multilayer apartments, villas, restaurants and entertainment places etc. It has a wide rang of capacity selection, from 6KW to 50KW.
● Heating function
Connected to insulation water tank, it can offer warm water all year around.
If connected to the fan coils or floor coil, it could heat air in winter.
● Features
n Cooling function are option.
Both heating only function and heating & cooling function are available, you can make a choice according to your requirement.
n Convenient operation. Microelectronics control, all temperature settings are set by manufacturer. System tests and adjusts water temperature automatically. All what user needs to do is just to press “ON/OFF ” button. System finishes the other operation automatically.
n Excellent performance. Adopt world famous components, and the best match of system design. Scroll compressor with high EER and low noise. High efficient heat exchanger insures the utmost using of system capacity. Professional air conditioner water pump insures smooth quiet operation.
n Easy to install. The system is designed with full consideration of insuring installation as easy as possible. Refrigerant circle is a sealed complete system finished by manufacturer. No needs for users to connect copper pipes or refrigerant charging. Hydraulic circle of system can be connected to hydraulic terminals by two tubes.
n Operating protection. System is designed with over voltage, under voltage, over load protection to insure safe operation. The microelectronics controller can start or switch off the machine by judging the water temperature. If the water temperature is lower than designed, the machine will be switch off to avoid freezing. The microelectronics controller can also supervise the status of components. Malfunction occurred would be transmitted to the controller and displayed through malfunction code.
FAQ
Q1: Are you a factory or trading company?
A: We are the factory, and especially R&D, manufacturer and sell various heat pump euipment. We have engaged in the heat pump R&D and production over 10 years.
Q2: How to find a heat pump suitable for my product?
A: a. Tell us about your product details;
b. What functional heat pump products do you need;
c. Tell us your local minimum ambient temperature and maximum ambient temperature to recommend products that meet your needs;
d. Power supply specifications and special requirements used in your country.
Q3: Is engineer available to serve oversea?
A: Yes, but the travel fee is paid by you. So actually to save your cost, We provide installation instructions and 24-hour online service and assist you till the end.
Q4: What is the payment term?
A: 30% T/T deposit and 70% T/T balance payment before shipping (If you purchase a sample that requires 100% payment, In order to avoid second payment, bank deduction fees will be generated again). Online trade assurance order, L/C, or as negotiated terms with clients.
Q5: How long is the warranty time?
A: 1 years of warranty. In guarantee period, if spare part broken, we will send you the parts free and we will pay the express fee. And please send us the spare parts back. when machine is out of guarantee period, we will provide you the spare parts by charge.
Q6: How can we make sure about the machine quality after we put the order?
A: Before delivery, we will send you the pictures for you to check the quality, and also you can arrange for quality checking by yourself or by your contacts in China.
Q7: We are afraid you won't send us the machine after we send you the money?
A: Please note our above business license and certificate. And if you don't trust us, then we can use Alibaba trade assurance service, guarantee your money, and guarantee your machine's on-time delivery and machine quality..
Q8: Why we should choose your company?
A: We are a professional heat pump manufacturer over 10 years, and we provide better after-sales service. We guarantee no risk for our deal.
| Model | Unit | DWW- 06HCA |
DWW- 09HCA |
DWW-15HCA/3 | DWW-18HCA/3 | DWW-30HCA/3 | DWW-45HCA/3 | DWW- 75HCA/3 |
DWW-150HCA/3 | |
| HP | 2 | 3 | 5 | 6 | 10 | 15 | 25 | 50 | ||
| Rated heating (W10℃/W45℃) |
Heating capacity | kW | 6 | 9 | 15 | 18 | 30 | 45 | 75 | 150 |
| Power input | kW | 1.4 | 2.1 | 3.48 | 4.18 | 6.98 | 10.49 | 17.4 | 34.88 | |
| Input current | A | 6.7 | 10 | 6.2 | 7.4 | 12.4 | 18.7 | 31 | 62.2 | |
| COP | W/W | 4.28 | 4.29 | 4.31 | 4.31 | 4.3 | 4.29 | 4.31 | 4.3 | |
| Rated cooling (W25℃/W7℃) |
Cooling capacity | kW | 5.6 | 8.4 | 14 | 16.8 | 28 | 42 | 70 | 140 |
| Power input | kW | 1.34 | 2 | 3.33 | 4 | 6.64 | 9.95 | 16.63 | 33.25 | |
| Input current | A | 6.4 | 9.6 | 5.9 | 7.1 | 11.8 | 17.7 | 29.6 | 59.3 | |
| EER | W/W | 4.18 | 4.2 | 4.21 | 4.2 | 4.22 | 4.22 | 4.21 | 4.21 | |
| Annual combined energy efficiency | W/W | 4.22 | 4.24 | 4.25 | 4.25 | 4.26 | 4.25 | 4.25 | 4.25 | |
| Maximum input power | kW | 2.1 | 3.1 | 5.2 | 6.2 | 10.4 | 15.7 | 26 | 52.1 | |
| Maximum input current | A | 10.1 | 15 | 9.3 | 11.1 | 18.6 | 27.9 | 46.3 | 92.8 | |
| Power supply | / | 220V~50Hz | 380V~50Hz/3Ph | |||||||
| Compressor | type | / | Rotary | Rotary | Scroll | Scroll | Scroll | Scroll | Scroll | Scroll |
| quantity | unit | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 4 | |
| Ground source side pump | type | / | Canned motor pump |
In-Line pumps |
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| quantity | unit | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |
| power | W | 270 | 270 | 270 | 270 | 500 | 750 | 1300 | 2500 | |
| User-side heat exchanger | type | / | High efficiency tank |
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| flow rate | m3/h | 1.03 | 1.55 | 2.58 | 3.1 | 5.16 | 7.74 | 12.9 | 25.8 | |
| water resistance | kPa | 40 | 45 | 48 | 50 | 52 | 55 | 56 | 58 | |
| Ground side heat pump | type | / | Tube-in-tube heat exchanger |
Shell and tube heat exchanger |
||||||
| flow rate | m3/h | 1.29 | 1.94 | 3.23 | 3.87 | 6.45 | 9.68 | 16.13 | 32.25 | |
| water resistance | kPa | 38 | 42 | 45 | 45 | 48.5 | 50.9 | 53.3 | 55.7 | |
| Throttling method | / | Capillary+Check valve |
Electronic expansion valve |
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| Refrigerant | type | / | R410A | R410A | R410A | R410A | R410A | R410A | R410A | R410A |
| charge | kg | 1.2 | 1.6 | 2.8 | 3.2 | 2.8*2 | 4.0*2 | 6.5*2 | 6.5*4 | |
| Dimension | H*W*D | mm | 400*600*530 | 560*650*730 | 560*650*730 | 560*650*730 | 1075*800*900 | 1075*800*900 | 1850*1300*1440 | 1850*2600*1440 |
| Weight | Net weight | kg | 56 | 84 | 106 | 112 | 165 | 240 | 560 | 1100 |
| Gross weight | kg | 62 | 92 | 117 | 123 | 182 | 264 | 616 | 1210 | |
| Noise level | dB(A) | 65 | 67 | 67 | 68 | 69 | 70 | 71 | 72 | |
| Water tank | Buffer tank | Lh | 40 | 60 | 100 | 100 | 200 | 300 | 500 | 1000 |
| Hot water tank | t | 1.5 | 2.5 | 4 | 5 | 8 | 12 | 20 | 40 | |
How does a heat pump work?
Heat pump uses electrical energy and take low grade heat energe from the outdoor air heat refrigerant which in turn heats water for domestic use and space heating. The efficiency of a heat pump is know as the coefficient of performance or COP. This is a ration of the heat delivered to power consumed.
At the beginning of the first phase the refrigerant is cold low pressure liquid.
1. The refrigerant passes into the evaporator and heat energy from the outside air passes over the evaporator causing the refrigerant to increase in pressure and change to warm vapor.
2. This warm vapor then enters the compressor where its tAAAemperature increase as result of the compression process and turns into a hot gas.
3. The hot refrigerant gas is then condensed as it passes across one side of a plate heat exchanger, and this is transferred via the primary water circuit to heat up the water tank.
4. Despite dropping in temperature, the cool vapor still has a high pressure and to reduce this pressure the vapor passes through an expansion valve. This cause the pressure to drop and the temperature lowers, returning the refrigerant to its initial state of cool low pressure liquid.
This process is repeated.It is only the refrigerant that passes through this cyclel; the water is heated as it travels through the plate heat exchanger. The heat energy from the refrigerant passes through the plate heat exchanger to the cooler water which increase in temperature. This heated water enters the home heating circuit and also be used to provide domestic hto water via a hot water tank.
