CALCULATING HEAT LOSSES FOR PIPES
Calculating heat losses for pipes: To do a calculation of heat losses on an insulated pipe you have to know certain data: required operating temperature, pipe dimension, the thickness of the insulation and conductivity, the nature of the environment.
| Q = | 2 x π x Dt x k x 1,16 x S |
| In (dy / di) |
| Q | = | Heat loss per meter pipe (W/m) |
| Dt | = | Temperature difference (the difference between the operating temperature and the lowest ambient temperature). |
| k | = | The heat permeability of the insulation (W/m°C). (Mineral wool = 0,04) |
| 1,16 | = | Konstant (conversion from kilojoules to watts) |
| dy | = | The exterior diameter of the insulation (mm) |
| di | = | The exterior diameter of the pipe (mm) |
| S | = | Safety factor 1,2 -1.5 (1,2 indoor – 1,5 outdoor) |