23 September 2011

ESTABLISING OPTIMAL HEAT PUMP SYSTEM WITH WATER THERMAL STORAGE – SIMULATION ALGORITHM OF TES_ECO AND PERIPHERAL TOOLS –


Optimized heat pump system will be defined by minimum energy consumption and
minimum CO2 generation within reasonable cost in life-cycle basis. Either with or without
thermal storage system is one of the factors to be evaluated as well as combination of kind of
heat pumps. The cost as well as the indoor environment shall be the constraint at
optimization process. Combination of the dynamic simulations for annual heating and cooling
load estimation and thermal storage behavior with static parameter analyses for heat pumps
and auxiliary equipments included in HVAC system, the performance of which are affected
by varying outside-air conditions and variable flow-rate and temperature difference, will give
satisfactorily correct results for decision making. TES_ECO that is provided by Heat Pump &
Thermal Storage Technology Center of Japan is based on this philosophy and developed as
an optimal system selection tool of heat pump with thermal storage system. Excluding the
multi-split type air conditioning system, TES_ECO can calculate the performance of variable
HVAC systems. The present paper introduces outline of the program and user-friendly
interface.