IAQ and thermal comfort within a near EnerPhit retrofit of a historic house

Prewett, Robert and Jimenez-Bescos, Carlos and Cohen, Robert (2017) IAQ and thermal comfort within a near EnerPhit retrofit of a historic house. In: 8th Nordic Passive House Conference: Adaptive and interactive buildings and districts (PHN17), 27-29 September 2017, Helsinki, Finland.

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Abstract

This paper follows on two previous papers presented at the International Passivhaus Conference 2010, Whole house refurbishment in a Conservation Area, in Dresden and 2012 in Hanover, C80 Retrofit: Measuring is believing, in which the technical design data and preliminary energy use was presented. The aim of this study was to evaluate the thermal comfort and Indoor Air Quality (IAQ) of the near EnerPHit dwelling while looking into how Passivhaus standard can achieve these targets while minimising energy consumption to draw lessons, which can be implemented in future Passivhaus and EnerPHit projects. The approach chosen to monitor IAQ and thermal comfort was based on monitoring the following indoor hygrothermal conditions: internal air temperature, relative humidity (RH) and CO2 concentration. Sensors were placed in every room of the dwelling for temperature and relative humidity and on the outside of the property to record outdoor conditions during the monitoring period. CO2 concentration was measured in the kitchen and main bedroom. This study shows that by applying the EnerPHit standard to retrofit projects, a healthy Indoor Air Quality and successful provision of thermal comfort for the occupants can be achieved during the winter season. Monitoring of the dwelling currently continue and further assessments regarding IAQ and thermal comfort will take place regarding the overheating aspects of thermal comfort in the summer months. High carbon reductions can be achievable following the EnerPHit standard but furthermore, temperatures will be steady around 20 degrees, while relative humidity will be comfortably in between the range of 30% and 70% and CO2 concentration levels will be well below the 1000 ppm as required for good air exchange and healthy IAQ.

Item Type: Conference or Workshop Item (Paper)
Keywords: Indoor Air Quality, EnerPHit, Passivhaus, Retrofit, Thermal Comfort, Temperature, Relative Humidity, CO2 concentration
Faculty: Faculty of Science & Technology
Depositing User: Dr Carlos Jimenez-Bescos
Date Deposited: 01 Mar 2018 14:26
Last Modified: 07 Mar 2018 14:41
URI: http://arro.anglia.ac.uk/id/eprint/702786

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