Structural Design of the mCCHP-RES System - Design for Micro-Combined Cooling, Heating and Power Systems - page 203

System structural components

Storages

Suppliers Consumers

Current
power potential

Power grid Power

outlet

Max Appliance

Home
appliance

Solar
light
radiation

Min powering

PV
panel

Power
consumption

Power
Storage

Space

Power
load

TCC

Cooling

CHP
unit • Biomass

storage

Current
heat potential

Space

• Gas

grid

Max
Min

Radiator

heating

Boiler

Heat
consumption

Solar
thermal
radiation

DHW

STpanel

Heat
load

Heat
Storage

Heat grid Heat

valve

Facilities Domestic

facilities

supplying

System
load

Suppliers
load

System
consumption

Consumers
consumption

Load diagrams

Consumption diagrams

Fig. 24 Structural model of the mCCHP system with thermally compression chiller

for cooling depends on the coef cient of performance, COP a , of the thermally

compression chiller. In general, the COP a of these cooling devices is between 0.6
and 0.8. The monthly power consumption of the residence is considered constant,
the entire year. The relations for determining the energy consumption of the system
in the case of cooling with thermal compression chillers are as follows:

q c
COP a

q sys ¼ q þ q DHW þ ð 57 Þ

ð Þ

e sys ¼ e 58

The diagrams of the power and heat consumption of the mCCHP system in the
case of cooling with thermal compression chillers, located in Galati area, are pre-
sented in Fig. 25 . These values are obtained by applying the relations 57 and 58 to
the data given in the Table 29 , when COP a = 0.8.
The heat consumption of the mCCHP system for certain speci

c climate zones

can be balanced between cool and warm season.
The monthly values of the heat and power loads for a mCCHP system, located in
Galati area, are recorded in the Table 32 , when COP a = 0.8.