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Problems with modelling Radiant cooling and VRV in Design Builder

Dear All,

Greetings. I am Kartikay Sharma (kartikay.sharma.mtech15@cept.ac.in), student for MTech Building Energy Performance at CEPT University. I am Right now using Simulations as a tool in my thesis to estimate the energy savings potential of buildings. For this purpose, I am using DesignBuilder to simulate all ECM/EEMs. Three of my selected ECMs are : 1. ECBC compliant chiller(centrifugal with 6.3 COP with VAV AHU and VAV terminal units) 2. VRV systems 3. Radiant cooling

My base-case system uses a water cooled system with an screw chiller of 5.2 COP and Constant Air Volume (CAV) AHU. The problem that I am facing is that, I am getting higher savings(overall EPI savings) if do ECM1 listed in table, but looking at case studies the savings from ECM3 should be higher than ECM1. Similarly I am facing problems with ECM2. The weather selected for my building is Hot and Dry climate of Ahmedabad.

So I request all the members to help me in the same

Problems with modelling Radiant cooling and VRV in Design Builder

Dear All,

Greetings. I am Kartikay Sharma (kartikay.sharma.mtech15@cept.ac.in), student for MTech Building Energy Performance at CEPT University. I am Right now using Simulations as a tool in my thesis to estimate the energy savings potential of buildings. For this purpose, I am using DesignBuilder to simulate all ECM/EEMs. Three of my selected ECMs are : 1. ECBC compliant chiller(centrifugal with 6.3 COP with VAV AHU and VAV terminal units) 2. VRV systems 3. Radiant cooling

My base-case system uses a water cooled system with an screw chiller of 5.2 COP and Constant Air Volume (CAV) AHU. The problem that I am facing is that, I am getting higher savings(overall EPI savings) if do ECM1 listed in table, but looking at case studies the savings from ECM3 should be higher than ECM1. Similarly I am facing problems with ECM2. The weather selected for my building is Hot and Dry climate of Ahmedabad.

So I request all the members to help me in the same

Problems with modelling Radiant cooling and VRV in Design Builder

Dear All,

Greetings. I am Kartikay Sharma (kartikay.sharma.mtech15@cept.ac.in), student for MTech Building Energy Performance at CEPT University. I am Right now using Simulations as a tool in my thesis to estimate the energy savings potential of buildings. For this purpose, I am using DesignBuilder to simulate all ECM/EEMs. Three of my selected ECMs are : 1. ECBC compliant chiller(centrifugal with 6.3 COP with VAV AHU and VAV terminal units) 2. VRV systems 3. Radiant cooling

My base-case system uses a water cooled system with an screw chiller of 5.2 COP and Constant Air Volume (CAV) AHU. The problem that I am facing is that, I am getting higher savings(overall EPI savings) if do ECM1 listed in table, but looking at case studies the savings from ECM3 should be higher than ECM1. Similarly I am facing problems with ECM2. The weather selected for my building is Hot and Dry climate of Ahmedabad.

So I request all the members to help me in the same