What problems can arise from an unreasonable HVAC system design?
Release time:
2025-09-09
Choose high energy efficiency ratio (such as variable frequency compressor, EC fan) and main engine with heat recovery function, with capacity calculated based on actual load, to avoid "big horse pulling small car" or "small horse pulling big car".
Optimize equipment selection
Choose high energy efficiency ratio (such as variable frequency compressor, EC fan) and main engine with heat recovery function, with capacity calculated based on actual load, to avoid "big horse pulling small car" or "small horse pulling big car".
Accurate load calculation and zoning
Perform hourly load simulation using software, zoning by orientation, floor, and usage; Each zone has independent constant temperature to reduce waste caused by overcooling and overheating.
Frequency Conversion and Intelligent Control
All cooling water pumps, chilled water pumps, and cooling tower fans are equipped with VFDs; The room temperature controller is connected to the BMS network, which automatically adjusts the air volume and set temperature based on CO ₂ concentration and occupancy sensors.
Improve the temperature difference of the air supply and reduce the water flow rate
The supply air temperature has increased from 12 ° C to 16 ° C, the chilled water has changed from 7/12 ° C to 10/15 ° C, the flow rate has decreased by 30%, and the pump consumption has decreased by 50%.
Heat recovery and free cooling
Rotary or plate type total heat recovery unit recovers 70% enthalpy value of exhaust air; During the transition season, the "economic mode" will be implemented, using outdoor low-temperature cooling to reduce compressor operation.
Nighttime pre cooling and ice storage/water storage
Ice making or cold water storage during the valley electricity period, melting ice for cooling during the day, peak shaving and valley filling, resulting in a 20-30% reduction in comprehensive electricity prices.
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