The air-conditioning market gradually reversed its downward trend under the stimulation of the “Home Appliances Going to the Countrysideâ€, “Energy Saving and Benefitsâ€, and “Old-for-new†policies.
2. The main equipments include: central air-conditioning, constant pressure water supply, building ventilation system, and heating 3. Application: Inverter is mainly used in central air conditioners for fans, cooling towers and other fans and water pump loads. 4. Equipment name and power area
Billion-controlled inverter heating system solutions:
In the heating system, the frequency converter is mainly used for regulating the amount of water and air volume of energy-consuming loads such as thermal station circulating pump, make-up pump, and drum induced draft fan, circulating pump, etc., so that the heating network heating quality is stable and efficient, and can effectively avoid Partial heating network overheating problems, but also eliminate the drum induced draft fan fan noise.
advantage:
1. Energy saving and emission reduction, optimized system, intelligent control 2 and harmonic suppression, does not affect the instruments in the heating system, DCS controller 3, low frequency and high torque, solves the problem of start-up difficulties, realizes smooth start-up, and prolongs the life of the equipment , Reduce mechanical wear, easy to maintain
Application Description Shanghe thermoelectric project application equipment in Ji’nan region: blower, circulation pump, make-up water pump system diagram:
Constant pressure water supply delays three solutions:
One control three working principle:
When the power is turned on, the inverter is started. When the pump reaches the power frequency, it still cannot meet the peak water supply. That is to say, the pump is turned to the power frequency, and the second pump is started until all the three pumps are started. When the water consumption decreases, the control decreases. Pump until there is only one pump work, the water pressure is still higher than the set pressure, the system goes to sleep, once the system pressure is below the wake-up value, the system enters the working state.
advantage:
1, optimize the system, intelligent water system, in order to meet customer needs on the basis of maximizing energy savings.
2. Equilibrium of the equipment is used to maximize the service life of the equipment. 3. The “water hammer effect†of the product during shutdown is avoided. Soft start is soft stop.
4, ensure the stability of water supply pressure in the central air conditioning cooling water solution system Description:
Let each room cool, drive the cooling water through the circulation pump, let it circulate in the terminal equipment 6 and the thermostatic control valve 5, the return water is through the cooling water pump 1, circulates in the cooler evaporator 3, passes the billion to control the frequency changer 2 , To control the temperature of the inlet and return water â–³T constant, to achieve the entire building thermostatic control.
advantage:
1, through the billion-control inverter to achieve variable flow, to achieve reduced operating costs and energy-saving requirements.
2. Temperature control in different regions and at different times can be realized to realize intelligent control.
3, through DCS, communication methods, into the control room to achieve remote control, to achieve information.
Central air-conditioning cooling water frequency conversion system diagram
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