Architectural Design of Large Hotel and Energy Used for Internal by onceandtwice

VIEWS: 27 PAGES: 10

									Architectural Design of Large Hotel and Energy Used
        for Internal Space Thermal Control

                       by Dr Bin Su

 School of Architecture and Landscape Architecture UNITEC,
                     Auckland, New Zealand.
Background

• According to the previous energy surveys, large hotels
  are the big energy users.
• Comparatively the energy for space thermal control is
  more closely related to the building design.
• Studies both in New Zealand and internationally have
  suggested that the best place to consider building
  energy efficiency is during the design of the building,
  not when the building has been completed and is in
  operation .
Difficulties


• It is difficult to get the energy consumption data only
  related to space thermal control in the large hotels.
• It is difficult and expensive to install the metres on the
  existing the central air-conditioning system to record the
  energy data only related to the space thermal control in
  the large hotels.
Energy used for space heating and cooling can be
approximately estimated through the following data:


•   Monthly or weekly electricity and gas consumption
    data of a central air-conditioning system
•   Monthly or weekly occupation rate related to the
    period of energy consumption data
•   Building design data
Sample 1 of relationships between energy consumption for
space thermal control and large hotel building designs

                                   Mean seasonal energy use for space cooling and heating per
                                         m3 night (kWh/m3night) to rate of opening/wall
                                               Cooling                          Heating
                                               Ratio of openings/w alls         Linear (Heating)
                                               Linear (Cooling)
                            0.12                                                                                35%

                                                                                                                30%
     Energy (kWh/m3/nigh)




                                                                                                                      Ratio of opening/wall
                            0.10
                                                                                                                25%
                            0.08
                                                                                                                20%
                            0.06
                                                                                                                15%
                            0.04
                                                                                                                10%
                            0.02                                                                                5%
                            0.00                                                                                0%
                                     Hotel 2   Hotel 4    Hotel 7     Hotel 6    Hotel 3    Hotel 2   Hotel 5
Sample 2 of relationships between energy consumption for
space thermal control and large hotel building designs

                          Mean seasonal energy used for heating and cooling per m3 per
                            night (kWh/m3/night) to ratio of roof area / total floor area
                    Cooling           Heating      Ratio of roof/floor    Linear (Heating)     Linear (Cooling)
                   0.12                                                                                  20%
                                                                                                         18%
                    0.1                                                                                  16%




                                                                                                                  Ratio of roof / floor
                                                                                                         14%
    kWh/m3/night




                   0.08
                                                                                                         12%
                   0.06                                                                                  10%
                                                                                                         8%
                   0.04                                                                                  6%
                   0.02                                                                                  4%
                                                                                                         2%
                     0                                                                                   0%
                            Hotel 7      Hotel 5   Hotel 6      Hotel 3   Hotel 1    Hotel 2   Hotel 4
Sample 3 of relationships between energy consumption for
space thermal control and large hotel building designs

                         Mean seasonal energy used for heating and cooling per m3 per night
                          (kWh/m3/night) to ratio of N, W, E side wall area / building volume
                                     Cooling                             Heating
                                     N,W,E side w all area/volume        Linear (Heating)
                                     Linear (Cooling)
                  0.12                                                                                     0.12

                   0.1                                                                                     0.10




                                                                                                                  Ratio of wall/volume
   kWh/m3/night




                  0.08                                                                                     0.08

                  0.06                                                                                     0.06

                  0.04                                                                                     0.04

                  0.02                                                                                     0.02

                    0                                                                                      0.00
                           Hotel 6     Hotel 2     Hotel 7     Hotel 1    Hotel 5      Hotel 4   Hotel 3
Sample 4 of relationships between energy consumption for
space thermal control and large hotel building designs

                      Mean seasonal energy used for space cooling and heating per
                         m3 per night (kWh/m3/night) to ratio of surface/volume
                    Surface/Volume         Cooling       Heating      Linear (Heating)      Linear (Cooling)

                   0.12                                                                            0.25




                                                                                                          Ratio of surface/volume
                    0.1                                                                            0.2
    kWh/m3/night




                   0.08
                                                                                                   0.15
                   0.06
                                                                                                   0.1
                   0.04

                   0.02                                                                            0.05

                     0                                                                             0
                          Hotel 6    Hotel 5   Hotel 4    Hotel 2   Hotel 7   Hotel 1    Hotel 3
Conclusions

• There are clear relationships between the energy used
  for space thermal control and building design and the
  relationships follow the trends.
• In Auckland the energy used for heating is major
  portion of the energy used for space thermal control,
  hotel building design should more focus on saving
  space heating energy.
• Architects should take a greater responsibility and
  leadership for hotel energy efficiency especially for the
  energy used for the internal space thermal control.
Thank You

								
To top