Arthur Grillo WR 200-F Descrizione e funzionamento - Pagina 3

Sfoglia online o scarica il pdf Descrizione e funzionamento per Strumenti di misura Arthur Grillo WR 200-F. Arthur Grillo WR 200-F 16. Heat meter

Application

The heat meter WR 200-F is used to detect the heat energy in closed heating or cooling

systems using a liquid heat carrier. The heat energy from the current heat output according

to the formula

P = Q · ∆T · k

calculated integrated over time and summed on a 9-digit counter.

The flow rate is also added up to another counter.

The heat coefficient k is calculated for water in the range of 0 ..

250 ° C as a function of flow and return temperature and the location of the flow measure-

ment. Basis for calculating are material properties for water according IAPWS-IF97.

For other heat carriers (e.g. Water-brine mixtures or thermal oil) can be considered equiva-

lent thermal coefficients in the unit.

P = heat output in kW

Q = Flow in m3/h

∆T = Temperature difference between flow-

and return temperature in °C

= Thermal coefficient in kWh / m

·°C