The control unit also controls {HEAD ~ a flow rate} of {TAIL ~ the second fluid}, such that the flow rate is higher in the cooling mode than in the heating mode 
The control unit also controls { HEAD ~ a flow rate } of { TAIL ~ the second fluid } , such that the flow rate is higher in the cooling mode than in the heating mode
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH