This research examines the energy performance of residential buildings that have on-site solar generation when they employ precooling
strategies and presents analysis results in terms of on-peak energy reduction and energy costs.
A similar strategy was implemented for hot weather, precooling
the building the previous afternoon.
9[degrees]C) dew point temperature Indirect evaporative condenser and/or ventilation No air precooling
Refrigeration (*) Add evaporative condensing to the refrigeration Yes system Add LED fixtures to all low- and medium-temperature Yes refrigerated cases and walk-in freezers Replace all evaporator fan motors in cases Yes with electronically commutated motors (*) Include strip curtains on all walk-in Yes cooler and stocking doors Add night curtains to open produce cases No Add doors to open medium-temperature cases.
For certain buildings, precooling
and/or preheating strategies may be called for.
Tip: Increasing the chilled-water flow temperature increases the possibility of using air-blast cooling as precooling
(or as full cooling in cold weather).
Previous studies often report lowered core temperatures and reduced sweat loss following the use of precooling
(Lee and Haymes, 1995; Olschewski and Bruck, 1988).
Physiological responses of strawberry to film wrapping and precooling
gave a substantial enhancement of endurance performance in a hot lab, but turning on the fan gave an even bigger enhancement, and precooling
plus the fan was no better than the fan alone .
The most important method to lower the respiration rate remains proper precooling
of produce directly after harvest followed by subsequent, correct temperature management.
The days when uncleaned ambient air could be used for the initial precooling
operation of the product after it had been fried, and for it then to be discharged in a contaminated format from the factories in volumes of 500,000 m3 per hour, if not more, are long gone.
Refrigeration: 1 piece of cooling cell combination B / T / H = 4600/3000/2450 mm, consisting of precooling
cell, cooling cell and freezer cell With special lighting and emergency call systems; 1 piece of composite cooling system for standard cooling; 1 pcs.