How to calculate the heat loss from a copper pipe?
How to calculate the heat loss from a copper pipe?
A 2″ pipe with temperature 75 oC (167 oF) is located in a room with temperature 20 oC (68 oF). The temperature difference between the pipe and the ambient room is 55 oC (99 oF). The heat loss from the pipe to the room can be estimated from the table (or chart) above to 131 W/m. Sorry to see that you are blocking ads on The Engineering ToolBox!
How much heat is produced by copper tubing?
For example: If the inside temperature of a 1″ copper tube is 150 degrees F, and the air temperature surrounding it is 50 degrees F, the temperature difference would be 150 – 50 = 100 degrees F. The tube’s heat output, read from the graph, is approximately 56 Btu/hr/ft.
How to calculate the heat loss of a flat area?
The equation above calculates the heat loss of an entire flat area in BTU/hr, but electricity is normally sold by kilowatt hours. Therefore, the equation needs a conversion factor to convert from BTU to watts. One watt equals 3.412 BTU.
How to calculate the resistance of copper wire?
Open the NEC book to chapter 9, table 8, called conductor properties. Locate the size and type (solid or stranded) of wire and scan across to the ohm/kFt column. This is one of the values you will need. For example, 12 gauge stranded wire has 2.05 ohms of resistance per every 1000 feet.
A 2″ pipe with temperature 75 oC (167 oF) is located in a room with temperature 20 oC (68 oF). The temperature difference between the pipe and the ambient room is 55 oC (99 oF). The heat loss from the pipe to the room can be estimated from the table (or chart) above to 131 W/m. Sorry to see that you are blocking ads on The Engineering ToolBox!
For example: If the inside temperature of a 1″ copper tube is 150 degrees F, and the air temperature surrounding it is 50 degrees F, the temperature difference would be 150 – 50 = 100 degrees F. The tube’s heat output, read from the graph, is approximately 56 Btu/hr/ft.
What is the temperature coefficient of copper wire?
Temperature Coefficient of Copper. The Temperature Coefficient of Copper (near room temperature) is +0.393 percent per degree C. This means if the temperature increases 1°C, the resistance will increase 0.393%. Examples: You have 100 feet of 20 gauge wire and its resistance is 1.015 ohms at 20° C (room temp).
What is the temperature of copper at 20ºC?
The temperature coefficient for some common materials are listed below (@ 20ºC): 1 Copper = 0.00393 2 Aluminum = 0.004308 3 Iron = 0.005671 4 Nickel = 0.005866 5 Gold = 0.003715 6 Tungsten = 0.004403 7 Silver = 0.003819