About the elevator parts, up and down through, how this part of the heat load calculation
Specification specified, adjacent room temperature is greater than or equal to 5 ℃, or through the partition wall and slab in heat transfer is greater than 10% of the heat load of the room, should be calculated through the partition wall or floor heat transfer, heat transfer heat consumption calculation formula to calculate the reference maintenance structure. The specification says facing correction rate, should consider the local winter relative sunshine duration, construction use and bai shade, and so on and so forth. In winter relative sunshine duration is less than 35% of the region, southeast, southwest and south to fix rate, appropriate USES - 10% ~ 0, to the east, and west is not fixed. If you describe, sunshine is obscured, are refer to the above description. Standard correction not only say, north and south, east and west four directions, suggest to scrutiny.
Heating of the lift shaft need? Need to heat load calculation? For the first time heard that.
When the internal energy, kinetic energy and potential energy variation can be ignored and no shaft work, heat input system and should leave the system heat balance, heat balance equations for heat transfer device which can be concluded as follows: Q1, Q2 and Q3 Q4 = + Q5 + Q6 Type in Q1 - material into equipment heat, kJ. Q2 - heating agent or by the coolant to the equipment and processing materials of heat, kJ. Q3 - heat effect of the process, kJ. Q4 - material out of the equipment of heat, kJ. Q5 - heating or cooling equipment consume the amount of heat or cold, kJ. Q6 - equipment dissipating heat to the environment, kJ. Should be paid attention to in the type, in addition to Q4 and Q1, other Q values are positive and negative two cases. For example, when the reaction heat, the "+" in Q3, On the other hand, when the reaction heat, Q3 "?" , it is the opposite of the stipulation of the thermodynamics. By type (5-1) and Q2, the heat load of the equipment. If Q2 is positive, indicating that need to provide by the equipment and processing of materials with heat, namely to be heated; On the other hand, suggests that need from removing heat by the equipment and processing of materials, which need to be cooling. In addition, for intermittent operation, due to the different period of operating conditions may be different, therefore, should be according to the different period of Q2 was calculated, and take the maximum as the equipment and the design principle of the heat load. For Q2, must seek out other the caloric value of the type
