请推荐：老房子做隔热

[hihiyd]

几十年的老房子，　想做顶层隔热。　

不知道有人做过吗？　什么价位？　用到那个公司？

谢谢先

 

[aboluo1981]

 

[我是王土地]

Costco professional service. 又便宜又好。

 

[ccc]

不想隔冷？

 

[uglyducking]

不想隔冷？

看你从哪方面看。

 

[ccc]

看你从哪方面看。

英文也隔冷隔热么？

 

[uglyducking]

英文也隔冷隔热么？

也。

 

[ccc]

也。

Mind telling us?

 

[hihiyd]

不想隔冷？

夏天隔热，　冬天隔冷

 

[uglyducking]

Mind telling us?

Thermal insulation in buildings is an important factor to achieving thermal comfort for its occupants. Insulation reduces unwanted heat loss or gain and can decrease the energy demands of heating and cooling systems.
Cold climates[edit]
In cold conditions, the main aim is to reduce heat flow out of the building. The components of the building envelope - windows, doors, roofs, walls, and air infiltration barriers - are all important sources of heat loss;[6][7] in an otherwise well insulated home, windows will then become an important source of heat transfer.[8] The resistance to conducted heat loss for standard glazing corresponds to an R-value of about 0.17W/m2/Ko[9] (compared to 2-4W/m2/Ko for glasswool batts[10]). Losses can be reduced by good weatherisation, bulk insulation, and minimising the amount of non-insulative (particularly non-solar facing) glazing. Indoor thermal radiation can also be a disadvantage with spectrally selective (low-e, low-emissivity) glazing. Some insulated glazing systems can double to triple R values.

Hot climates[edit]
In hot conditions, the greatest source of heat energy is solar radiation.[11] This can enter buildings directly through windows or it can heat the building shell to a higher temperature than the ambient, increasing the heat transfer through the building envelope.[12][13] The Solar Heat Gain Co-efficient (SGHC)[14] (a measure of solar heat transmittance) of standard single glazing can be around 78-85%.[15] Solar gain can be reduced by adequate shading from the sun, light coloured roofing, spectrally selective (heat-reflective) paints and coatings and various types of insulation for the rest of the envelope. Specially coated glazing can reduce SHGC to around 10%.[9] Radiant barriers are highly effective for attic spaces in hot climates.[16] In this application, they are much more effective in hot climates than cold climates. For downward heat flow, convection is weak and radiation dominates heat transfer across an air space. Radiant barriers must face an adequate air-gap to be effective.

If refrigerative air-conditioning is employed in a hot, humid climate, then it is particularly important to seal the building envelope. Dehumidification of humid air infiltration can waste significant energy. On the other hand, some building designs are based on effective cross-ventilation instead of refrigerative air-conditioning to provide convective cooling from prevailing breezes.

 

[ccc]

夏天隔热，　冬天隔冷

Any term for that?

 

[ccc]

Thermal insulation in buildings is an important factor to achieving thermal comfort for its occupants. Insulation reduces unwanted heat loss or gain and can decrease the energy demands of heating and cooling systems.
Cold climates[edit]
In cold conditions, the main aim is to reduce heat flow out of the building. The components of the building envelope - windows, doors, roofs, walls, and air infiltration barriers - are all important sources of heat loss;[6][7] in an otherwise well insulated home, windows will then become an important source of heat transfer.[8] The resistance to conducted heat loss for standard glazing corresponds to an R-value of about 0.17W/m2/Ko[9] (compared to 2-4W/m2/Ko for glasswool batts[10]). Losses can be reduced by good weatherisation, bulk insulation, and minimising the amount of non-insulative (particularly non-solar facing) glazing. Indoor thermal radiation can also be a disadvantage with spectrally selective (low-e, low-emissivity) glazing. Some insulated glazing systems can double to triple R values.

Hot climates[edit]
In hot conditions, the greatest source of heat energy is solar radiation.[11] This can enter buildings directly through windows or it can heat the building shell to a higher temperature than the ambient, increasing the heat transfer through the building envelope.[12][13] The Solar Heat Gain Co-efficient (SGHC)[14] (a measure of solar heat transmittance) of standard single glazing can be around 78-85%.[15] Solar gain can be reduced by adequate shading from the sun, light coloured roofing, spectrally selective (heat-reflective) paints and coatings and various types of insulation for the rest of the envelope. Specially coated glazing can reduce SHGC to around 10%.[9] Radiant barriers are highly effective for attic spaces in hot climates.[16] In this application, they are much more effective in hot climates than cold climates. For downward heat flow, convection is weak and radiation dominates heat transfer across an air space. Radiant barriers must face an adequate air-gap to be effective.

If refrigerative air-conditioning is employed in a hot, humid climate, then it is particularly important to seal the building envelope. Dehumidification of humid air infiltration can waste significant energy. On the other hand, some building designs are based on effective cross-ventilation instead of refrigerative air-conditioning to provide convective cooling from prevailing breezes.

保温!!!

Okay?

那书读得真是多余了。

 

[uglyducking]

保温!!!

Okay?

那书读得真是多余了。

从物理角度来说，都属于热力学范畴。

 

[ccc]

从物理角度来说，都属于热力学范畴。

隔热/隔冷?

 

[uglyducking]

隔热/隔冷?

都是隔布朗运动。