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Anonymous users2024-02-081.The heat pump unit was put into trial operation on a stand-alone basis.
Before the heat pump unit is energized for the first time, it needs to be powered on and preheated for 12 hours in advance to ensure the life and stability of the compressor operation of the unit. After 12 hours of power preheating, the professional and technical personnel of the equipment manufacturer will arrive at the scene to set the operating parameters of the unit, including the operating conditions, the temperature of the inlet and outlet water, the temperature difference, the setting of the protection parameters of the unit, etc., after the setting is completed, first open the circulating water pump on the ground source side to make him operate normally, the circulating water on the ground source side enters the condenser of the unit in the refrigeration state, and the circulating water on the ground source side enters the evaporator of the unit under the heating condition. After turning on one more circulating water pump on the air conditioning side, and the waterway system is all normal, turn on the unit, and the compressor of the unit will start one after another with a delay, and observe the change of the value on the display screen of the unit.
As well as the temperature and pressure of the inlet and outlet of the evaporator condenser of the unit, etc., observe the operation of the compressor of the unit and whether there is any abnormal sound. After the unit runs for a certain period of time (the length of time is determined according to the load opening at the end), the compressor of the unit will automatically unload until the operating temperature of the unit is close to the set working condition parameters, and the compressor will automatically stop running until the designed working condition parameters are fully reached. It shows that the unit is running normally and meets the requirements of the design.
The time of stand-alone test operation of the unit is 8 hours.
2.Flushing of system pipes in the computer room.
Pipeline flushing is carried out separately according to different systems such as ground source side water and air conditioning water system. Before flushing, the water supply and return pipes of the respective systems are short-circuited in the machine room, and the sewage outlet is welded at the lowest point of the system pipes, and the hose is used to lead to the sump area. After the short-circuit connecting pipe is completed, fill the pipe with water, then turn on the circulating pump of the respective system to flush at the maximum flow rate of the system, and clean the filter at the inlet of the pump every 20 minutes to remove impurities in the circulating water.
At the same time, open the valve of the sewage outlet to remove the sewage from the pipe. At the same time, open the water replenishment pump network system pipeline for water replenishment to ensure the normal circulation of water in the system. The flushing requires that the water quality is clean and colorless, and there are no impurities such as sediment and welding slag.
3.The system is linked to trial operation.
Relevant national standards and norms that should be implemented:
1.Unified standard for acceptance of construction quality of construction projects (GB50300-2001).
2.Code for construction and acceptance of refrigeration equipment and air separation equipment installation engineering (GB50274-98).
3.General Code for Construction and Acceptance of Mechanical Equipment Installation Engineering (GB50231-98).
4.Code for Construction Quality Acceptance of Building Water Supply and Drainage and Heating Engineering (GB50242-2002).
5.Code for Acceptance of Construction Quality of Ventilation and Air Conditioning Engineering (GB50243-2002).
6.Construction quality inspection and evaluation standards for ventilation and air-conditioning projects (GBJ304-88).
7.Construction process regulations for construction and installation sub-projects.
8.Code for Construction and Acceptance of Urban Heating Pipe Network Engineering (GBJ28-89).
Energy saving and environmental protection! The underground pipe of the ground source heat pump is equivalent to the cooling tower of the air conditioner, and the water circulation only depends on the ground source circulation pump. Because the temperature of dozens of meters underground is constant all year round and can be maintained at about 18 degrees, it can meet the load of the unit regardless of winter or summer, and can save about 70% energy compared with other refrigeration equipment.
Air source heat pump: To put it simply, the air source heat pump is to use a small amount of electric energy to process the outdoor air, and transport the comfortable temperature that meets our needs to the room, in this process, the air source heat pump consumes electrical energy to do two work, that is, to make the outdoor air temperature reach the required temperature, heat up or cool down, which is the work of outdoor air, and the other is to transport cold and hot energy to the room, which is the work of handling. The air source heat pump is affected by external natural factors, when the outdoor ambient temperature is very high, it is difficult to discharge the indoor hot air, the cooling effect in the room is poor, and when the outdoor temperature is very low in winter, there will be frost phenomenon in heating. >>>More
With the arrival of winter, it is the season of the year for ground source heat pump floor heating maintenance services; An important part of floor heating maintenance is the cleaning and maintenance of floor heating pipelines; The purpose of cleaning and maintenance of floor heating pipes is to make the water flow of floor heating pipes smoother and achieve the best heating effect; After the floor heating pipe is used for a period of time, there will be scale adhering to the pipe wall, which will affect the heat dissipation effect. The first reason is that the water contains minerals, calcium, magnesium ions, etc., which are easy to form dirt and adhere to the pipe wall; The second is microorganisms, microorganisms in the water will produce some flocculents, with the increase of water temperature, the flocculent increases and attaches to the wall of the pipe that does not scale, forming biological slime, which will cause pipeline embolism and affect the heating effect. Each way of the floor heating pipeline should be repeatedly flushed, if necessary, add appropriate cleaning agent, sewage from the sewage outlet of the water collector, and inject special protective agent for the pipeline after cleaning, effectively avoid scaling and microbial breeding, and protect the pipeline and pipe fittings; The technical content of ground source heat pump is high, and the specific technical details and technical problems can be consulted by a professional company such as "Zhurong Environment".
1. Performance characteristics of ground source heat pumps, installation and maintenance requirements of internal machines and pipelines. >>>More
1. After the completion of the unit (sub-unit) project, the contractor shall organize the relevant personnel to self-inspect according to the quality standards and design drawings, and evaluate the test results, and fill in the "Project Completion Inspection Form" after meeting the requirements and attach the project acceptance report and complete quality data to the project supervision agency to apply for completion pre-acceptance. >>>More