A variable speed chilled water system is usually designed with a constant speed circulator pump
, which maintains a constant flow through the chiller, and a variable speed building pump that supplies cold water from the chiller loop to the coils that demand it.
This results in hydraulic savings regarding both volume flow rate [DELTA]Q and discharge head AH, whose product is proportional to the corresponding electrical power savings for the circulator pump
, considering electrical power equation
According to the company, the site - http://www.energyproject.com - provides advice on energy efficient domestic circulator pumps
, the core of the central heating system.
Initially I had a check valve in the circulator pump
The boiler heat output is calculated based on the temperature difference at the boiler supply and return, and the flow rate of the boiler circulator pump
New economical circulator pump
In recent innovations, the company launched what it said was a new economical circulator pump
for universal use.
The alternative energy saving option used for schools in south central Texas (and other large footprint buildings) is a simple residential design with a single wet rotor circulator pump
serving an individual ground loop for each heat pump as shown in Figure 1b.
Architect Jaquelin Camp was invoiced $17,250 in 2008 for a circulator pump
module and a 5 ton (18 kW), dual-capacity water-to-air heat pump with a rated EER of 25.6 (Btu/W x h).