Heating pipe diameter selection
Water
Steel pipes k=0.15 mm
Selection based on power
Selection based on flow
Navigated to Heating pipe diameter selection
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Enter the flow rate in m3/h or dm3/s for the program to automatically select the diameter and calculate the pressure drop.
You can also enter power and temperature difference - the program will automatically calculate the flow rate and select the diameter
Remember that you can change the medium temperature and its type (water, propylene glycol, ethylene glycol)
Pipe selection based on the unit pressure drop criterion.
The unit resistance in Pa/m is calculated using the Darcy-Weisbach formula. The absolute roughness can be selected by the user.
After entering power and temperature difference, the flow field is automatically filled.
The flow field in m3/h or dm3/s can be filled as desired. After entering one value, the other value will be automatically converted.
heating.pipes.help.designerNote
The default unit pressure drop criterion is dP = 160 Pa/m
Glycol solutions have higher viscosity than pure water, which affects the friction coefficient (higher pressure losses).
The higher the temperature of water or glycol, the lower the viscosity and thus the lower the friction coefficient (lower pressure losses).
1 bar = 100 kPa 1 kPa = 0.01 bar
Propylene Glycol is considered a non-hazardous compound or one with very low hazard. It has not been found to cause allergies, does not show carcinogenicity and is not mutagenic. Contact with undiluted propylene glycol may cause eye and skin irritation, but these are harmless and usually subside quickly after contact ends. In the body, it is quickly converted to lactic acid (similar to how sugar is converted to energy in muscles). It is easily biodegradable in the environment
Ethylene Glycol is a harmful substance that has a depressive effect on the central nervous system. It irritates the nasal mucosa and conjunctiva. The body absorbs it through the respiratory tract, skin, and digestive tract. When ingested, glycol initially causes symptoms similar to alcohol intoxication, followed by (after several or a dozen hours) metabolic acidosis. When heating glycol, the resulting vapor can lead to loss of consciousness, while in small concentrations it causes nose and throat irritation and headaches. Therefore, special caution should be exercised when working with glycol.