{"id":2158,"date":"2025-03-28T14:19:21","date_gmt":"2025-03-28T13:19:21","guid":{"rendered":"https:\/\/dan-iso.dk\/?page_id=2158"},"modified":"2025-05-22T15:23:30","modified_gmt":"2025-05-22T13:23:30","slug":"help-with-calculating-heat-loss-in-pipes","status":"publish","type":"page","link":"https:\/\/dan-iso.dk\/en\/help-with-calculating-heat-loss-in-pipes\/","title":{"rendered":"Help with calculating heat loss in pipes"},"content":{"rendered":"

Help with calculating heat loss in pipes<\/span><\/h2><\/div>
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This module helps you calculate energy losses in insulated and uninsulated pipes, as well as the energy savings you achieve by insulating them.<\/p>\n

All calculations require that you enter all parameters before you can perform the calculation. The calculations are divided into an \u201cUninsulated\u201d and an \u201cInsulated\u201d part. You must first enter and calculate the installation in the uninsulated state before you can enter data for the insulated installation. If you change the entered values after you have performed a calculation,\u00a0you must press the "Calculate" button to update the results<\/strong>Below you can see an overview of the values you need to enter to make a calculation.<\/p>\n

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Uninsulated installation<\/strong><\/h3>\n
Ambient temperature:<\/strong><\/h6>\n

This is the average temperature in the room or location where the pipes\/ducts are installed.<\/p>\n

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Media temperature:<\/strong><\/h6>\n

It is the temperature of the gas or liquid transported in the pipes. All calculations of ventilation ducts assume that the medium is air.<\/p>\n

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Diameter of media pipe:<\/strong><\/h6>\n

This is the outside diameter of the pipe or duct without insulation. All calculations assume that the wall thickness of the pipes\/ducts is \u201csmall\u201d in relation to the diameter.<\/p>\n

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Orientation:<\/strong><\/h6>\n

Under Orientation, you must select whether the pipes are installed horizontally or vertically. The orientation of the pipes\/ducts is used to calculate the external transition coefficient.<\/p>\n

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Surface of media pipe:<\/strong><\/h6>\n

Here you can select the external surface coating of the service pipe. The surface is important in relation to the calculations, as different surfaces have different emissivities, i.e. they radiate, and thus lose heat at different rates. The menu contains values for the emissivity of typical materials for service pipes according to DS\/EN ISO 12240.<\/p>\n

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Installation location:<\/strong><\/h6>\n

Here you can choose whether the installation is located indoors or outdoors. This has an impact on whether the installation is expected to be exposed to forced convection due to wind. If you select \u201cOutdoor\u201d as the location, you must also enter the average wind speed in\u00a0m\/s<\/em>For installations located indoors, a wind speed of\u00a00 m\/s<\/em>If pipes\/ducts are located indoors, the pipe's own convection is taken into account.<\/p>\n

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Insolated installation<\/strong><\/h3>\n
Dan-iso product:<\/strong><\/h6>\n

Here you can choose between the different insulation products that Dan-iso offers. You can choose between polyurethane insulation (PUR) in different densities and polyisocyanurate insulation (PIR).<\/p>\n

You can read more about our products here:\u00a0Dan-iso Products<\/a><\/p>\n

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Insulation thickness:<\/strong><\/h6>\n

Here you can enter the thickness of the insulation. Dan-iso offers a range of standard thicknesses as well as customized thicknesses to suit your specific needs.<\/p>\n

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Outer surface of insulation:<\/strong><\/h6>\n

Here you can select the external surface coating of the insulation shell. The surface is important in relation to the calculations, as different surfaces have different emissivities, that is, they radiate, and thus lose heat at different rates. The menu contains values for all standard coatings for Dan-iso insulation products.<\/p>\n

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Results:<\/strong><\/h6>\n

The calculator indicates the energy loss per meter in W\/m and the total energy loss in the installation in W. You can see results for the installation in both the uninsulated and insulated state. Furthermore, the calculator indicates the difference between the two states as the resulting energy saving in W.<\/p>\n<\/div>

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