ÂDear All,Can anybody help me to provide any idf file on solar facade and solar shading or ventilated facade with BIPV for simulation? Thank you in advanced.Best wishes,ÂSajal Chowdhury
B.Arch.(BUET), M.Arch.(BUET), M.Eng.(HU,Japan)C.
Assistant Professor, Dept. of Architecture (Study Leave)
Chittagong University of Engineering & Technology Chittagong 4349, Bangladesh
Present Address:
Laboratory of Environmental Ergonomics
(Planning and Performances for Built Environment)
Division of Human Environmental Systems
Graduate School of Engineering
Hokkaido University, N13-W8, Kita-ku, Sapporo 060-8628, JAPAN
Mobile(P): +818096126951, E-MAIL: sajal_c@xxxxxxxxxOn Sunday, February 21, 2016 4:56 AM, "Sajal Chowdhurysajal sajal_c@xxxxxxxxx [EnergyPlus_Support]" <EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:
ÂDear Jean, many thanks for your comments and coordination. So for the first research step is it better to assessment the performance between cross ventilation, displacement ventilation and mixing type for large factory production space for tropical climate by using EP simulation? Need your expertise feedback. Because it will be helpful to take decisions gradually. Thank you.Â
Sent from my iPhone
On Feb 20, 2016, at 8:53 PM, Jim Dirkes jim@xxxxxxxxxxxxxxxxxxxxxxxxxxx [EnergyPlus_Support] <EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:ÂFor your consideration....
- I have had conversations with people who live in such hot, humid climates and it seems that "comfort" is defined differently than in much of North America where I live. If comfort is acceptable at 30C and 50% RH, for example, then the HVAC design becomes different.
- While the mass of the building envelope may be small for a factory, the manufacturing equipment, storage racking and floor can add to that substantially. This mean that nighttime pre-cooling may become effective.
- There are exceptionally efficient indirect evaporative systems which add no moisture and may help keep mold growth low. (e.g., www.coolerado.com)
- Reducing solar gain via insulation or a reflective surface will be a helpful strategy for a large roof.
B.Arch.(BUET), M.Arch.(BUET), M.Eng.(HU,Japan)C.
Assistant Professor, Dept. of Architecture (Study Leave)
Chittagong University of Engineering & Technology Chittagong 4349, Bangladesh
Present Address:
Laboratory of Environmental Ergonomics
(Planning and Performances for Built Environment)
Division of Human Environmental Systems
Graduate School of Engineering
Hokkaido University, N13-W8, Kita-ku, Sapporo 060-8628, JAPAN
Mobile(P): +818096126951, E-MAIL: sajal_c@xxxxxxxxxOn Saturday, February 20, 2016 3:47 PM, Sajal Chowdhury <sajal_c@xxxxxxxxx> wrote:
Dear Jean,Thanks for your detailing. But is it feasible to implement any HVAC system for such a large open space? What about the matter of energy efficiency and cost effectiveness? Cross ventilation and face change materials does not work many times for the huge depth of the factory floor. But in production floor we have to keep comfort temperature range as result we need some cooling strategies so that we can apply for tropical climate. According to your reply, Displacement ventilation often works well due to the high ceiling and one of the common strategy for factory. But we observe may garments factory in the tropics (Bangladesh) using evaporation cooling but as you already told about Microbial growth. On the other hand in tropical climate if we minimize window and door, it will be no good enough. In this case, what is the best decision or research topic about passive cooling strategy for garments factory by using Energy Plus simulation engine (professor recommended) .  ÂRegards, ÂSajal ChowdhuryOn Saturday, February 20, 2016 10:00 AM, "Jean Marais jeannieboef@xxxxxxxxx [EnergyPlus_Support]" <EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:
ÂA factory in the tropics...look you're gonna need some serious cooling...nothing passive about that. You have seriously hot and humid air so I would try and minimize the outdoor air in the air supply...even at night.Passively speaking:
What you could consider is some sort of load shedding. Large tanks full of chilled water that you charge at night when electricity is cheaper and outdoor temperatures are lower.I would insulate heavily, minimize windows and doors and forget about daylighting.Try pull the heat away from the processes and other heat sources before they enter the work space (direct exhaust).Put PV on the whole roof.I would rather dehumidify less and not use radiant cooling, than the otherway around.Night cooling...yes if you have a heavy structure (unusual for factory), but not night outdoor air flushing if humidity is a problem.Displacement ventilation often works well due to the high ceiling. Common strategy for factory.Direct and indirect evaporation: bottom line...keep your loops closed. Microbial growth will be more problematic in a hot humid climate. Evaporation rates in a humid climate are possibly less than a warm and dry climate.Solar heating.On 19 Feb 2016 6:41 am, "Sajal Chowdhury sajal_c@xxxxxxxxx [EnergyPlus_Support]" <EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:ÂDear Jean,Thank you for reply.The options are:1. cross ventilation2. desiccant humidification3. direct evaporation cooling4. indirect evaporation cooling5. displacement ventilation6. radiative cooling7. nocturnal ventilationSo among them Which cooling technique is more efficient for large factory production space (for tropical climate and min 500 nos people work) regarding energy efficiency?
ÂSajal Chowdhury
B.Arch.(BUET), M.Arch.(BUET), M.Eng.(HU,Japan)C.
Assistant Professor, Dept. of Architecture (Study Leave)
Chittagong University of Engineering & Technology Chittagong 4349, Bangladesh
Present Address:
Laboratory of Environmental Ergonomics
(Planning and Performances for Built Environment)
Division of Human Environmental Systems
Graduate School of Engineering
Hokkaido University, N13-W8, Kita-ku, Sapporo 060-8628, JAPAN
Mobile(P): +818096126951, E-MAIL: sajal_c@xxxxxxxxxOn Friday, February 19, 2016 2:35 PM, "Jean Marais jeannieboef@xxxxxxxxx [EnergyPlus_Support]" <EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:
ÂYou should list several options so that we can discuss them.On 18 Feb 2016 1:23 pm, "Sajal Chowdhury sajal_c@xxxxxxxxx [EnergyPlus_Support]" <EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:ÂDear All,Can anybody help me regarding the issue on:**Which passive cooling technique is more efficient for large factory production space (for tropical climate and min 500 nos people work) regarding energy efficiency? If anybody do this kind of simulation by using Energy Plus need some suggestions and feedback.Thank you. ÂBest Wishes,ÂSajal Chowdhury
B.Arch.(BUET), M.Arch.(BUET), M.Eng.(HU,Japan)C.
Assistant Professor, Dept. of Architecture (Study Leave)
Chittagong University of Engineering & Technology Chittagong 4349, Bangladesh
Present Address:
Laboratory of Environmental Ergonomics
(Planning and Performances for Built Environment)
Division of Human Environmental Systems
Graduate School of Engineering
Hokkaido University, N13-W8, Kita-ku, Sapporo 060-8628, JAPAN
Mobile(P): +818096126951, E-MAIL: sajal_c@xxxxxxxxx--James V Dirkes II, PE, BEMP, LEED AP
CEO/President
The Building Performance Team Inc.
1631 Acacia Dr, GR, Mi 49504
Direct: 616.450.8653
jim@xxxxxxxxxxxxxxxxxxxxxxxxxxx
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