Behrouz Nourozi

Mechanical ventilation equipped with heat recovery systems (MVHR) is prevalently used in the Scandinavian climate. These systems considerably reduce the ventilation heat losses during the long and cold winter seasons in such cold climate regions. The humidity in the return air from the building may condense due to exposure to low outdoor air temper...

Low-temperature heating (LTH) and high-temperature cooling (HTC) systems that use less energy than traditional systems are viable alternatives for dealing with rising energy demand and increasing renewable energy’s share in the global energy matrix. The present work proposes an innovative LTH-HTC system comprising photovoltaic thermal cooling panel...

The present research introduces an innovative zero-energy building complex equipped with a rule-based control approach for higher integration of renewable resources in the local energy network while bringing down energy costs. The idea centers on establishing several smart controllers to achieve a bidirectional interaction with the heating/electric...

This paper introduces an innovative and cost-effective multi-generation plant, driven by the central receiver-based concentrated solar systems, to facilitate the desired global green-transition process. The vanadium chlorine thermochemical cycle, which uses hydrogen instead of natural gas in the combustion chamber, is used as an innovative approach...

Ventilation systems are a vital component of buildings in order to ensure a healthy and comfortable environment for the occupants. In cold climate regions, ventilation systems are responsible for approximately 30% of building heat losses. In addition to outdoor pollutants (particulate matters, NOX, etc.), indoor emissions from materials in the form...

The European Commission aims to reduce the greenhouse gas emissions of the European Union's building stock by 60% by 2030 compared with 1990. Meanwhile, the global demand for cooling is projected to grow 3% yearly between 2020-2050. High-temperature cooling systems provide cooling with lower exergy use than conventional cooling systems and enable t...

The building sector accounts for approximately 40% of total global energy usage. In residential buildings located in cold climate countries, 30-60% of this energy is used for space heating, 20–30% is lost by discarded residential wastewater, and the rest is devoted to ventilation heat loss. Sweden experienced a construction boom during the so-calle...

The present work introduces an innovative yet feasible heating system consisting of a ground source heat pump, borehole thermal energy storage, an auxiliary heater, radiators, and ventilation coils. The concept is developed by designing a new piping configuration monitored by a smart control system to reduce the return flow temperature and increase...

In recent years, the increasing occurrence of heatwaves raises the cooling need of residential buildings in Scandinavian countries, which are traditionally not equipped with active cooling systems. Indoor overheating caused by such heatwaves leads to severe consequences for occupants, especially kids and seniors. Efficient and economical cooling so...

This study investigated the thermal performance of energy active windows (EAW). The obtained U-values of the studied EAW were compared to state-of-the-art triple-glazing windows (TGW) during a heating season. Simulation software, Matlab, was used for analytical heat transfer modeling of the studied window-types and to illustrate temperature gradien...

Non-generating resources such as thermostatically controlled loads (TCLs) can arbitrage energy prices and provide balancing reserves when aggregated due to their thermal energy storage capacity. Based on a performed survey of Swedish single- and two-family dwellings with electric heating, this paper quantifies the potential of TCLs to provide reser...

Minimizing thermal losses through windows and maintaining large glazing areas to provide adequate natural lighting in residential buildings are essential considerations for modern architecture, sustainability, and indoor comfort. In this study, a detailed heat transfer model for a novel energy-active window (EAW) is developed and validated to rate...

This study has focused on evaluating the financial potential of wastewater and geothermal heat recovery systems in a multi-family building. The recovered heat was used to improve the performance of mechanical ventilation with heat recovery (MVHR) system during the coldest days in central Sweden. The main issue, which was targeted with these solutio...

The energy used by building sector accounts for approximately 40% of the total energy usage. In residential buildings, 30-60% of this energy is used for space heating which is mainly wasted by transmission heat losses. A share of 20-30% is lost by the discarded residential wastewater and the rest is devoted to ventilation heat loss. The main obje...

This study investigated the thermal potential of two renewable heat sources, residential wastewater and geothermal energy, for preheating the incoming air to the air-handling unit (AHU) in a multi-family building. The main purpose of preheating the inlet air was to avoid the frost formation inside AHU due to low outdoor temperatures during winter....

Frosting is a common issue in air-to-air heat recovery exchangers installed in buildings in cold climate countries. Further to the developed defrosting methods, frost prevention by preheating the outdoor air can reduce the energy usage in buildings. In this study, residential wastewater as a renewable heat source is used to preheat the outdoor air....

Frosting is a common problem in air handling units in buildings in cold climates. Tackling this problem is so far achieved by using considerable amount of energy while during this process, the indoor air quality is compromised. This article presents the Life Cycle Cost (LCC) assessment of a preventive solution for frosting using two renewable heat...

An efficient use of waste heat recovery and geothermal heat can play an important role in lowering the overall energy use of buildings. This study evaluated the potential of geothermal energy and heat recovery from residential wastewater to reduce the energy need of building-ventilation in cold climates. The performance of the mechanical ventilatio...

Residential wastewater is a constant and available source for saving energy. This paper mainly investigated the possibility of utilizing wastewater heat to reduce ventilation heat load. Swedish residential buildings are to a significant extent served by mechanical ventilation with heat recovery (MVHR) systems. MVHR in airtight buildings has greatly...

Airbags are a passive safety technology, required to function with zero failure rate. Advances in Computer Aided Engineering have allowed vehicle manufacturers to predict material and system behavior in the event of a crash. The sudden and rapid nature of a vehicle frontal crash, together with strict requirements put on safety make this a sensitive...