Comparative analysis of Heat Valve Ventilation System with Traditional HVAC System in terms of reducing carbon dioxide emission - Case Study GreenHUB House in Aalborg, Denmark
Term
4. Term
Education
Publication year
2024
Submitted on
2024-01-11
Pages
151
Abstract
The escalating global demand for energy is an ongoing challenge, and a substantial share of this demand is attributed to the building sector, contributing significantly to worldwide energy consumption. Recent studies have shown that air-based heating system can reduce not only initial but also running costs. Yet, research comparing the environmental impact from the whole life cycle perspective seems to be missing using HVV system in Denmark. This thesis is an comparative analysis between HVV and traditional heating and ventilation methods. Study was performed for a critical apartment case in GreenHUB House building case in Aalborg, Denmark. The paper aimed to investigate in what extent heat valve ventilation compared to traditional heating and ventilation systems can help with reaching the goal of CO2 emission as low as 2.5kg CO2 -eq/m2 /year and ensure comfortable indoor environment specially during heating season. The energy performance of various scenarios including different set points, occupancy profiles and air handling units was conducted. The Simulation was carried out in BSim, while LCA was performed using LCAByg. The results showed that in case of higher set point and choice of air handling unit with higher heat recovery, the HVV system has demonstrated benefits in terms of energy efficiency and reduced environmental impact over traditional system. This led to lower environmental impact using HVV system up to 15% over traditional systems and up to 7% annual energy savings with satisfying indoor environment. The traditional system has showed advantages in energy consumption and environmental impact in other scenarios analysed in the report.
Keywords
CO2 ; HVAC ; HVV ; IAQ ; LCA ; Air-based heating system ; Thermal comfort
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