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i want to do energy simulation of a single room with a vacuum glazing using energyplus. the BSDF file of vacuum glazing is generated using LBNL window 7.7.10 software. after energyplus simulation when I check the envelope summary from HTML file, the U-value (5.288W/m2-K) of the glazing is much higher than the Window simulation result (2.38 W/m2-K). as a result, the energy consumption also higher even than a double clear IGU. could anyone please explain the reason? why the U-value of complex glazing is changed in energyplus simulation?

i want to do energy simulation of a single room with a vacuum glazing using energyplus. the BSDF file of vacuum glazing is generated using LBNL window 7.7.10 software. after energyplus simulation when I check the envelope summary from HTML file, the U-value (5.288W/m2-K) of the glazing is much higher than the Window simulation result (2.38 W/m2-K). as a result, the energy consumption also higher even than a double clear IGU. could anyone please explain the reason? why the U-value of complex glazing is changed in energyplus simulation?

i want to do energy simulation of a single room with a vacuum glazing using energyplus. the BSDF file of vacuum glazing is generated using LBNL window 7.7.10 software. after energyplus simulation when I check the envelope summary from HTML file, the U-value (5.288W/m2-K) of the glazing is much higher than the Window simulation result (2.38 W/m2-K). as a result, the energy consumption also higher even than a double clear IGU. could anyone please explain the reason? why the U-value of complex glazing is changed in energyplus simulation?

i want to do energy simulation of a single room with a vacuum glazing using energyplus. the BSDF file of vacuum glazing is generated using LBNL window 7.7.10 software. after energyplus simulation when I check the envelope summary from HTML file, the U-value (5.288W/m2-K) of the glazing is much higher than the Window simulation result (2.38 W/m2-K). as a result, the energy consumption also higher even than a double clear IGU. could anyone please explain the reason? why the U-value of complex glazing is changed in energyplus simulation?

i want to do energy simulation of a single room with a vacuum glazing using energyplus. the BSDF file of vacuum glazing is generated using LBNL window 7.7.10 software. after energyplus simulation when I check the envelope summary from HTML file, the U-value (5.288W/m2-K) of the glazing is much higher than the Window simulation result (2.38 W/m2-K). as a result, the energy consumption also higher even than a double clear IGU. could anyone please explain the reason? why the U-value of complex glazing is changed in energyplus simulation?