Teren

catalog

calculation

enesdefritplptuaru

Calculation of heat losses in heating networks

№ section	L section m	t water °C	DN mm	Hours of work per year	Laying	Pipeline and laying method
			15 20 25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800 900	h < 5000 h > 5000	outside inside	steel on movable supports steel on suspended supports non-metallic pipeline
			15 20 25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800 900	h < 5000 h > 5000	outside inside	steel on movable supports steel on suspended supports non-metallic pipeline
			15 20 25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800 900	h < 5000 h > 5000	outside inside	steel on movable supports steel on suspended supports non-metallic pipeline
			15 20 25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800 900	h < 5000 h > 5000	outside inside	steel on movable supports steel on suspended supports non-metallic pipeline

+ More sections

№ section	L section m	t water °C	DN mm	Hours of work per year	Laying	Pipeline and laying method
			15 20 25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800 900	h < 5000 h > 5000	outside inside	steel on movable supports steel on suspended supports non-metallic pipeline
			15 20 25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800 900	h < 5000 h > 5000	outside inside	steel on movable supports steel on suspended supports non-metallic pipeline
			15 20 25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800 900	h < 5000 h > 5000	outside inside	steel on movable supports steel on suspended supports non-metallic pipeline
			15 20 25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800 900	h < 5000 h > 5000	outside inside	steel on movable supports steel on suspended supports non-metallic pipeline
			15 20 25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800 900	h < 5000 h > 5000	outside inside	steel on movable supports steel on suspended supports non-metallic pipeline
			15 20 25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800 900	h < 5000 h > 5000	outside inside	steel on movable supports steel on suspended supports non-metallic pipeline
			15 20 25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800 900	h < 5000 h > 5000	outside inside	steel on movable supports steel on suspended supports non-metallic pipeline
			15 20 25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800 900	h < 5000 h > 5000	outside inside	steel on movable supports steel on suspended supports non-metallic pipeline
			15 20 25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800 900	h < 5000 h > 5000	outside inside	steel on movable supports steel on suspended supports non-metallic pipeline
			15 20 25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800 900	h < 5000 h > 5000	outside inside	steel on movable supports steel on suspended supports non-metallic pipeline
			15 20 25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800 900	h < 5000 h > 5000	outside inside	steel on movable supports steel on suspended supports non-metallic pipeline
			15 20 25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800 900	h < 5000 h > 5000	outside inside	steel on movable supports steel on suspended supports non-metallic pipeline
			15 20 25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800 900	h < 5000 h > 5000	outside inside	steel on movable supports steel on suspended supports non-metallic pipeline
			15 20 25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800 900	h < 5000 h > 5000	outside inside	steel on movable supports steel on suspended supports non-metallic pipeline
			15 20 25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800 900	h < 5000 h > 5000	outside inside	steel on movable supports steel on suspended supports non-metallic pipeline
			15 20 25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800 900	h < 5000 h > 5000	outside inside	steel on movable supports steel on suspended supports non-metallic pipeline
			15 20 25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800 900	h < 5000 h > 5000	outside inside	steel on movable supports steel on suspended supports non-metallic pipeline
			15 20 25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800 900	h < 5000 h > 5000	outside inside	steel on movable supports steel on suspended supports non-metallic pipeline
			15 20 25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800 900	h < 5000 h > 5000	outside inside	steel on movable supports steel on suspended supports non-metallic pipeline
			15 20 25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800 900	h < 5000 h > 5000	outside inside	steel on movable supports steel on suspended supports non-metallic pipeline
			15 20 25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800 900	h < 5000 h > 5000	outside inside	steel on movable supports steel on suspended supports non-metallic pipeline
			15 20 25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800 900	h < 5000 h > 5000	outside inside	steel on movable supports steel on suspended supports non-metallic pipeline
			15 20 25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800 900	h < 5000 h > 5000	outside inside	steel on movable supports steel on suspended supports non-metallic pipeline
			15 20 25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800 900	h < 5000 h > 5000	outside inside	steel on movable supports steel on suspended supports non-metallic pipeline
			15 20 25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800 900	h < 5000 h > 5000	outside inside	steel on movable supports steel on suspended supports non-metallic pipeline
			15 20 25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800 900	h < 5000 h > 5000	outside inside	steel on movable supports steel on suspended supports non-metallic pipeline
			15 20 25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800 900	h < 5000 h > 5000	outside inside	steel on movable supports steel on suspended supports non-metallic pipeline
			15 20 25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800 900	h < 5000 h > 5000	outside inside	steel on movable supports steel on suspended supports non-metallic pipeline
			15 20 25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800 900	h < 5000 h > 5000	outside inside	steel on movable supports steel on suspended supports non-metallic pipeline
			15 20 25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800 900	h < 5000 h > 5000	outside inside	steel on movable supports steel on suspended supports non-metallic pipeline

Underground laying
(two-pipe sections)

№ section	L section, m two- pipe	tw °C annual average supply	DN mm	Hours of work per year	Laying	Material pipes	Insulation PU foam
			25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800	h < 5000 h > 5000	channel laying channelless	steel non-metal
			25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800	h < 5000 h > 5000	channel laying channelless	steel non-metal
			25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800	h < 5000 h > 5000	channel laying channelless	steel non-metal
			25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800	h < 5000 h > 5000	channel laying channelless	steel non-metal

+ More sections

№ section	L section, m two- pipe	tw °C annual average supply	DN mm	Hours of work per year	Laying	Material pipes	Insulation PU foam
			25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800	h < 5000 h > 5000	channel laying channelless	steel non-metal
			25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800	h < 5000 h > 5000	channel laying channelless	steel non-metal
			25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800	h < 5000 h > 5000	channel laying channelless	steel non-metal
			25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800	h < 5000 h > 5000	channel laying channelless	steel non-metal
			25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800	h < 5000 h > 5000	channel laying channelless	steel non-metal
			25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800	h < 5000 h > 5000	channel laying channelless	steel non-metal
			25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800	h < 5000 h > 5000	channel laying channelless	steel non-metal
			25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800	h < 5000 h > 5000	channel laying channelless	steel non-metal
			25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800	h < 5000 h > 5000	channel laying channelless	steel non-metal
			25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800	h < 5000 h > 5000	channel laying channelless	steel non-metal
			25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800	h < 5000 h > 5000	channel laying channelless	steel non-metal
			25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800	h < 5000 h > 5000	channel laying channelless	steel non-metal
			25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800	h < 5000 h > 5000	channel laying channelless	steel non-metal
			25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800	h < 5000 h > 5000	channel laying channelless	steel non-metal
			25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800	h < 5000 h > 5000	channel laying channelless	steel non-metal
			25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800	h < 5000 h > 5000	channel laying channelless	steel non-metal
			25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800	h < 5000 h > 5000	channel laying channelless	steel non-metal
			25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800	h < 5000 h > 5000	channel laying channelless	steel non-metal
			25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800	h < 5000 h > 5000	channel laying channelless	steel non-metal
			25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800	h < 5000 h > 5000	channel laying channelless	steel non-metal
			25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800	h < 5000 h > 5000	channel laying channelless	steel non-metal
			25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800	h < 5000 h > 5000	channel laying channelless	steel non-metal
			25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800	h < 5000 h > 5000	channel laying channelless	steel non-metal
			25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800	h < 5000 h > 5000	channel laying channelless	steel non-metal
			25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800	h < 5000 h > 5000	channel laying channelless	steel non-metal
			25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800	h < 5000 h > 5000	channel laying channelless	steel non-metal
			25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800	h < 5000 h > 5000	channel laying channelless	steel non-metal
			25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800	h < 5000 h > 5000	channel laying channelless	steel non-metal
			25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800	h < 5000 h > 5000	channel laying channelless	steel non-metal
			25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800	h < 5000 h > 5000	channel laying channelless	steel non-metal
			25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800	h < 5000 h > 5000	channel laying channelless	steel non-metal

Calculate

Interestingly, if the pipe is insulated with a layer equal to the inner diameter of the pipe, the heat loss from one meter of pipe for all diameters from DN15 to DN150 will be the same!

Calculation of heat losses in heat networks according to the Norms of thermal insulation of equipment and pipelines of heat networks.

The method of calculating heat losses is suitable for all pipelines covered by the Regulatory Methodology, except for systems with a subzero temperature of the working environment.

The amount of heat loss was calculated based on the normative density of the heat flow through the insulated surface of the pipeline. The methodology uses tabular data of specific heat losses from one meter of pipe, which are given in the Regulatory Methodology.

Estimated heat loss through pipelines of the heat network is determined by the formula:

Q = q · l · k · b

q – the specific normative value of heat loss from one meter of the pipe, W/m, at the average temperature of the hot-water and the given number of hours of operation per year;

k – the coefficient that takes into account additional heat losses from pipeline supports and shut-off valves;

b – the coefficient that takes into account the change in heat flow density through the thermal insulation layer made of polyurethane foam (PU foam) is determined by the Regulatory Methodology;

l – length of the pipeline section, m.

When calculating heat losses in heating networks, the annual average temperature of hot water should be taken.

Calculated temperatures in two-pipe water heating networks with quality regulation depending on Temperature curve of the heating system:

In heat networks with quantitative regulation, when calculating heat losses, the maximum temperature in the supply pipeline is used, and in the return 50°C.

This calculation does not reflect the actual heat loss through the pipelines, but only determines the normative value, which should not be exceeded, if the thickness of the thermal insulation was selected in accordance with the specified Regulatory Methodology.

Calculation of actual heat losses from pipes

Pipe span calculation

Calculation of pipe diameter by flow

Calculation of pressure loss in pipe

Calculation of variations in pipe length

Calculation of heat loss from pipes

Calculation of heat losses from heating network pipes

Collector diameter calculation

Calculation of the temperature of a mix of flows

Calculation of the U-shaped compensator

Calculation of the L-shaped compensator

Calculation of the Z-shaped compensator

Calculation of the Axial compensator

Calculation of the throttle diaphragm

Temperature curve of the heating system

Heating cost calculator

Data verification heat meter

3 554	visitors yesterday
	visitors per month
32 052	from United States
80 570	from all countries

Subscribe

We do not sell equipment. Our goal is to help calculate and select the appropriate equipment. Companies can register on this website, add their equipment, and specify its price.