| Neither 2.1E nor 2.2 reports OA loads separately. What I have done in the past is to make two runs: one with OA, the other with no OA by setting OA to zero or a very small number (be careful about the economizer), then compare the results to get OA loads and other impacts. EnergyPlus does have an OA report. Tianzhen From: postman@xxxxxxxx Sent: Wed, 7/25/2007 1:02am To: BLDG-SIM@xxxxxxxx Subject: [BLDG-SIM] BLDG-SIM@xxxxxxxx message digest 07/25/2007 03:01 (#2007-976) BLDG-SIM@xxxxxxxx message digest 07/25/2007 03:01 (#2007-976)
Date: Tue, 24 Jul 2007 10:30:19 -0400 From: "Michael Tillou" <michael.tillou@xxxxxxxxx> Subject: RE: eQuest Outside Air Load Report Brandon, I agree that there needs to be better reporting of OA loads in equest. OA loads only show up in the system reports so you would have to subtract the building loads from the load reports to get an approximation of the hourly OA loads. Notice I said approximation. The system reports also include pipe and duct losses, pump & fan heat and any other system level effects on your heating/cooling. The best way I have found to check outside air is to use the hourly reports. Remember you can set the hourly report output to a format that can be easily opened in Excel if you need to do any additional calculations. Mike Michael Tillou, PE, LEED P: 413-458-9870 C: 413-652-1087 _____ From: BLDG-SIM@xxxxxxxx [mailto:BLDG-SIM@xxxxxxxx] On Behalf Of Brandon Nichols Sent: Monday, July 23, 2007 7:46 PM To: BLDG-SIM@xxxxxxxx Subject: [BLDG-SIM] eQuest Outside Air Load Report Thanks to all for answers to previous question, Here's one more... I think it has been asked before although I Google-scanned the archives could not seem to find it. Namely, where is the eQuest outside air load reported? I see lots disclaimers for "The above loads do not include outside air ventilation loads", but no outside air load ventilation summary. Do I really have to take a differential between the total load and all other loads to back-into an outside air load for each space and system? There's needs to be a better way...! Thanks in advance, Brandon Nichols, PE Mechanical HARGIS ENGINEERS 600 Stewart Street Suite 1000 Seattle, WA 98101 www.hargis.biz d | 206.436.0400 c | 206.228.8707 o | 206.448.3376 f | 206.448.4450 ================== You received this e-mail because you are subscribed to the BLDG-SIM@xxxxxxxx mailing list. To unsubscribe from this mailing list send a blank message to BLDG-SIM-UNSUBSCRIBE@xxxxxxxx Back to top Date: Tue, 24 Jul 2007 12:04:23 -0500 From: "Mark Prince" <mprince@xxxxxxxxxx> Subject: Question About Equest - Space Peak Load Calculations I have a question about how Equest calculates the space peak load = calculation. For all of my internal heat gains (people, lights, equipment) I have = schedules. When you create a schedule, it not only asks for utilization = for Sunday through Saturday, but it also asks for a schedule for Design = Cooling and schedule for Design Heating. I assume that the Design Cooling = Schedule/Design Heating Schedule is used by Equest to calculate the peak = cooling and heating load for the space. For instance, lets say I have a laboratory with 8 watts/square foot of = equipment load. From an energy standpoint, this equipment load really = never gets higher than 50% throughout the year. So I create my Sunday = through Saturday schedules with a peak utilization of 0.5000. However, = there will be sometimes where 8 watts/square foot will be generated in the = laboratory, and I need to size my zone supply airflow for this 8 watts/squa= re foot. Therefore, I create my design cooling schedule to require a peak = utilization of 1.000. However, when I run the simulation and go to the = "LS-B Space Peak Load Component" report the peak cooling load is using the = 50% diversified load. Why is this happening? Shouldn't Equest be using = the Design Cooling schedule which has a peak utilization of 1.000 all the = time? Sincerely, Back to top Date: Tue, 24 Jul 2007 13:35:08 -0400 From: "Michael Tillou" <michael.tillou@xxxxxxxxx> Subject: RE: Question About Equest - Space Peak Load Calculations Before equest will use the Design Day information in the schedules you need to setup actual design days for the simulation to use. You need to do this in the detailed edit under the Project & Site tab. You need to create both a heating and cooling design day and then input the desired temperature extremes and duration that you wish to simulate. Reference the climate design data in the ASHRAE Fundamentals Handbook for your location. Once you create the design days equest will use them for equipment sizing rather than the peak heating & cooling loads calculated from the TMY weather data. Mike Michael Tillou, PE, LEED P: 413-458-9870 C: 413-652-1087 -----Original Message----- From: BLDG-SIM@xxxxxxxx [mailto:BLDG-SIM@xxxxxxxx] On Behalf Of Mark Prince Sent: Tuesday, July 24, 2007 1:04 PM To: BLDG-SIM@xxxxxxxx Subject: [BLDG-SIM] Question About Equest - Space Peak Load Calculations I have a question about how Equest calculates the space peak load calculation. For all of my internal heat gains (people, lights, equipment) I have schedules. When you create a schedule, it not only asks for utilization for Sunday through Saturday, but it also asks for a schedule for Design Cooling and schedule for Design Heating. I assume that the Design Cooling Schedule/Design Heating Schedule is used by Equest to calculate the peak cooling and heating load for the space. For instance, lets say I have a laboratory with 8 watts/square foot of equipment load. From an energy standpoint, this equipment load really never gets higher than 50% throughout the year. So I create my Sunday through Saturday schedules with a peak utilization of 0.5000. However, there will be sometimes where 8 watts/square foot will be generated in the laboratory, and I need to size my zone supply airflow for this 8 watts/square foot. Therefore, I create my design cooling schedule to require a peak utilization of 1.000. However, when I run the simulation and go to the "LS-B Space Peak Load Component" report the peak cooling load is using the 50% diversified load. Why is this happening? Shouldn't Equest be using the Design Cooling schedule which has a peak utilization of 1.000 all the time? Sincerely, ================== You received this e-mail because you are subscribed to the BLDG-SIM@xxxxxxxx mailing list. To unsubscribe from this mailing list send a blank message to BLDG-SIM-UNSUBSCRIBE@xxxxxxxx Back to top Date: Tue, 24 Jul 2007 10:45:08 -0700 From: "Andrew Craig" <andrew_c@xxxxxxxxx> Subject: RE: Question About Equest - Space Peak Load Calculations I'll also add that when you simulate a building using a California climate zone, it automatically creates a Design Day report along with the standard reports. This is a nice feature that seems to only be incorporated with the CZ climate zones. Andrew Craig, EIT, LEED(r) AP | Mechanical Designer INTERFACE ENGINEERING=20 708 SW Third Avenue | Suite 400 | Portland, OR 97204=20 direct: 503.382.2696 office: 503.382.2266 fax: 503.382.2262 email: Andrew_C@xxxxxxxxx web: www.ieice.com=20 Consultants of Choice to the Built Environment for over 35 years Kirkland, WA | Portland, OR | Sacramento, CA | Salem, OR | SanFrancisco, CA -----Original Message----- From: BLDG-SIM@xxxxxxxx [mailto:BLDG-SIM@xxxxxxxx] On Behalf Of Michael Tillou Sent: Tuesday, July 24, 2007 10:35 AM To: BLDG-SIM@xxxxxxxx Subject: [BLDG-SIM] Question About Equest - Space Peak Load Calculations Before equest will use the Design Day information in the schedules you need to setup actual design days for the simulation to use. You need to do this in the detailed edit under the Project & Site tab. You need to create both a heating and cooling design day and then input the desired temperature extremes and duration that you wish to simulate. Reference the climate design data in the ASHRAE Fundamentals Handbook for your location. Once you create the design days equest will use them for equipment sizing rather than the peak heating & cooling loads calculated from the TMY weather data. Mike Michael Tillou, PE, LEED P: 413-458-9870 C: 413-652-1087 -----Original Message----- From: BLDG-SIM@xxxxxxxx [mailto:BLDG-SIM@xxxxxxxx] On Behalf Of Mark Prince Sent: Tuesday, July 24, 2007 1:04 PM To: BLDG-SIM@xxxxxxxx Subject: [BLDG-SIM] Question About Equest - Space Peak Load Calculations I have a question about how Equest calculates the space peak load calculation. For all of my internal heat gains (people, lights, equipment) I have schedules. When you create a schedule, it not only asks for utilization for Sunday through Saturday, but it also asks for a schedule for Design Cooling and schedule for Design Heating. I assume that the Design Cooling Schedule/Design Heating Schedule is used by Equest to calculate the peak cooling and heating load for the space. For instance, lets say I have a laboratory with 8 watts/square foot of equipment load. From an energy standpoint, this equipment load really never gets higher than 50% throughout the year. So I create my Sunday through Saturday schedules with a peak utilization of 0.5000. However, there will be sometimes where 8 watts/square foot will be generated in the laboratory, and I need to size my zone supply airflow for this 8 watts/square foot. Therefore, I create my design cooling schedule to require a peak utilization of 1.000. However, when I run the simulation and go to the "LS-B Space Peak Load Component" report the peak cooling load is using the 50% diversified load. Why is this happening? Shouldn't Equest be using the Design Cooling schedule which has a peak utilization of 1.000 all the time? Sincerely, =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D You received this e-mail because you are subscribed to the BLDG-SIM@xxxxxxxx mailing list. To unsubscribe from this mailing list send a blank message to BLDG-SIM-UNSUBSCRIBE@xxxxxxxx =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D You received this e-mail because you are subscribed=20 to the BLDG-SIM@xxxxxxxx mailing list. To unsubscribe=20 from this mailing list send a blank message to=20 BLDG-SIM-UNSUBSCRIBE@xxxxxxxx Back to top Date: Tue, 24 Jul 2007 17:10:04 -0400 From: Chris Jones <cj@xxxxxxxxx> Subject: Re: Gas Fireplace The tricky thing is the schedule of fireplace use. Then you need to determine how much heat is transferred into the space versus how much goes up the chimney. Then define a process load and schedule. Set the sensible gain appropriately. In the zone you need to define an exhaust fan, fan power and schedule to match the source use schedule. At 17:24 2007-07-05, you wrote: >Hello Analyst/Engineers, > >Need input on how to model fireplace and the dedicated exhaust fan. >It is 300,000Btu/h gas fire place that is used for esthetical only. >All heat is being exhausted through the chimney with 3200cfm VSD exhaust fan. > * Can somebody point me how to model this in eQuest? > * Since it is not used for heating purposes, I assume it should > be modeled both for baseline and proposed model? >Any input is greatly appreciated. >Thanks > >Virdiansyah "Virdi" Permana >EMSI >Energy Analyst >(202) 291 3102 T >(202) 291 3107 F > > > > > >You received this e-mail because you are subscribed >to the BLDG-SIM@xxxxxxxx mailing list. To unsubscribe >from this mailing list send a blank message to >BLDG-SIM-UNSUBSCRIBE@xxxxxxxx Chris Jones, P.Eng. 14 Oneida Avenue Toronto, ON M5J2E3 Tel. 416 203-7465 Fax. 416 946-1005 Back to top Date: Tue, 24 Jul 2007 19:55:33 -0700 (PDT) From: Zhen Tian <tianzhen9@xxxxxxxxx> Subject: RE: Energy use for elevators Eric, Thanks a lot for your reply. I have a further question. If we have the elevator power data, what appropriate schedule should we use to approximately to get the elevator annual energy use? I checked the ASHREAE Appendix G but cannot find appropriate schedule for elevators. I think the schedule of elevators are quite diffent from other schedules like occupancy scheule. One example, supposing people work from 8am to 6pm continuously, I guess that elevator working schedule should not be the same. Do you have any ideas what appropriate schedule should we use? Thanks a lot. Regards, David Eric Yang Yes, ASHRAE 90.1 Appendix G requires modeling elevator energy as long as it is designed in the project. You can come up a realistic schedule or stick to a standard schedule in Appendix G if necessary. Eric Smithgroup Back to top Date: Tue, 24 Jul 2007 21:59:58 -0700 From: "Gaurav Mehta" <gmehta75@xxxxxxxxx> Subject: Re: Energy use for elevators David, Table G-E to G-N in the User Manual for ASHRAE 90.1-2004 provides the = default schedules (occupancy, lighting, HVAC, DHW and Elevator) which = can be used for Appendix G analysis if the actual schedules are not = known. Moreover, if you are using eQuest then in the detail mode go to daily = schedules and right click and select 'create daily schedules' and in the = pop-up window click on 'Load Component from Library'. Form the drop down = menu in the 'Category' select 'Elevator Schd' and from drop down menu in = the 'Entry' select the appropriate schedule. And then go on to make = weekly and annual schedules.=20 I have not made a comparison, but they might be a bit different from the = schedules provided in the User Manual.=20 Furthermore, you can assign the elevator power data (in kW) directly to = the Electric Meter using the 'Interior Direct Loads' tab and then = selecting the elevator schedule from the drop down menu. This enduse can = be assigned to Misc Equipment and will show up in addition to the plug = loads in the BEPU and BEPS report. =20 Best regards, Gaurav Mehta Sustainable Building Analyst Stantec ----- Original Message -----=20 From: Zhen Tian=20 To: BLDG-SIM@xxxxxxxx=20 Cc: BLDG-SIM@xxxxxxxx=20 Sent: Tuesday, July 24, 2007 19:55 Subject: [BLDG-SIM] Energy use for elevators Eric, Thanks a lot for your reply. I have a further question. If we have the elevator power data, what = appropriate schedule should we use to approximately to get the elevator = annual energy use? I checked the ASHREAE Appendix G but cannot find appropriate schedule = for elevators. I think the schedule of elevators are quite diffent from other = schedules like occupancy scheule. One example, supposing people work = from 8am to 6pm continuously, I guess that elevator working schedule = should not be the same. Do you have any ideas what appropriate schedule = should we use? Thanks a lot. Regards, David=20 Eric Yang Yes, ASHRAE 90.1 Appendix G requires modeling elevator energy as = long as it is designed in the project. You can come up a realistic = schedule or stick to a standard schedule in Appendix G if necessary.=20 Eric Smithgroup -----Original Message----- From: BLDG-SIM@xxxxxxxx on behalf of Zhen Tian Sent: Mon 7/23/2007 10:36 PM To: BLDG-SIM@xxxxxxxx Subject: [BLDG-SIM] Energy use for elevators Dear All, I have seen some messages these days asking the energy use of = elevators. But it seems that there is no very accurate way of modeling = annual lift energy use. If we need to simulate building energy use according to ASHRAE = 90.1-2004 for LEED accrediation in e-QUEST, do we need to simulate = elevator energy use or not? Is it a must do? Could somebody with = experience with this topic give me some hints? Thanks a lot in advance. Regards, David --------------------------------- Take the Internet to Go: Yahoo!Go puts the Internet in your pocket: = mail, news, photos & more.=20 = =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D You received this e-mail because you are subscribed=20 to the BLDG-SIM@xxxxxxxx mailing list. To unsubscribe=20 from this mailing list send a blank message to=20 BLDG-SIM-UNSUBSCRIBE@xxxxxxxx Back to top End BLDG-SIM@xxxxxxxx message digest 07/25/2007 03:01 (#2007-976) ====================================================== You received this e-mail because you are subscribed to the BLDG-SIM@xxxxxxxx mailing list. To unsubscribe from this mailing list send a blank message to BLDG-SIM-UNSUBSCRIBE@xxxxxxxx =====================================================You received this e-mail because you are subscribed to the BLDG-SIM@xxxxxxxx mailing list. To unsubscribe from this mailing list send a blank message to BLDG-SIM-UNSUBSCRIBE@xxxxxxxx |