Visit the Energy Systems Laboratory Homepage.
Hot Thermal Storage/Selective Energy System Reduces Electric Demand for Space Cooling As Well As Heating in Commercial Application
Abstract
Based on an experimental residential retrofit
incorporating thermal storage, and extensive subsequent
modeling, a commercial design was developed
and implemented to use hot thermal storage to significantly reduce electric demand and utility energy
costs during the cooling season as well as the heating
season.
To achieve air conditioning savings, the system
separates dehumidification from sensible cooling;
dehumidifies by desiccant absorption, using heat
from storage to dry the desiccant; and then cools
at an elevated temperature improving overall system
efficiency.
Efficient heat for desiccant regeneration is
provided by a selective-energy system coupled with
thermal storage. The selective-energy system incorporates
diesel cogeneration, solar energy and off-peak
electric resistance heating.
Estimated energy and first cost savings, as
compared with an all-electric VAV HVAC system, are:
30 to 50% in ductwork size and cost; 30% in fan
energy; 25% in air handling equipment; 20 to 40% in
utility energy for refrigeration; 10 to 20% in refrigeration equipment; and space savings due to
smaller ductwork and equipment.
Citation
Meckler, G. (1985). Hot Thermal Storage/Selective Energy System Reduces Electric Demand for Space Cooling As Well As Heating in Commercial Application. Energy Systems Laboratory (http://esl.tamu.edu); Texas A&M University (http://www.tamu.edu). Available electronically from https : / /hdl .handle .net /1969 .1 /6827.