The Experts below are selected from a list of 42 Experts worldwide ranked by ideXlab platform

V.m. Phalle - One of the best experts on this subject based on the ideXlab platform.

  • Analysis of Passive Retrofitting Measures for Reduced Electricity Demand
    2019 International Conference on Nascent Technologies in Engineering (ICNTE), 2020
    Co-Authors: Jaya Goyal, S.s. Mantha, V.m. Phalle
    Abstract:

    The aim of this work is to determine the effective passive Measures to enhance the thermal comfort of the building envelop. Passive Measures are those Measures which reduce electricity demand but do not require any electricity to operate. The building components such as walls, roof and window are exposed to solar radiation and outside air temperature. Heat is conducted from exterior environment into the interior of the building envelop through these channels, wherein majority (approx. 60%) is conducted by walls and roof. Envelop insulation is considered as an efficient Retrofitting Measure to reduce heat gain from walls and roof. In this study, a techno-economic model has been investigated to obtain optimum insulation thickness (OIT) for the residential buildings in the three climate zones of India. Four types of commonly used insulation materials analysed are: expanded polystyrene (EPS), extruded polystyrene (XPS), fiberglass and polyurethane foam (PUF). The effect of cooling design temperature and the coefficient of performance (COP) of air conditioners on the insulation thickness were also investigated. Fiberglass is observed as the most cost effective insulation material, considering life cycle performance of the insulation material for all the climate zones. It was also concluded that air-conditioner with higher COP can potentially reduce the insulation cost.

  • Analysis of Passive Retrofitting Measures for Reduced Electricity Demand
    2019 International Conference on Nascent Technologies in Engineering (ICNTE), 2019
    Co-Authors: Jaya Goyal, S.s. Mantha, V.m. Phalle
    Abstract:

    The aim of this work is to determine the effective passive Measures to enhance the thermal comfort of the building envelope. Passive Measures are those Measures which reduce electricity demand but do not require any electricity to operate. The building components such as walls, roof and window are exposed to solar radiation and outside air temperature. Heat is conducted from exterior environment into the interior of the building envelope through these channels, wherein majority (approx. 60%) is conducted by walls and roof. Envelope insulation is considered as an efficient Retrofitting Measure to reduce heat gain from walls and roof. In this study, a techno-economic model has been investigated to obtain optimum insulation thickness (OIT) for the residential buildings in the three climate zones of India. Four types of commonly used insulation materials analysed are: expanded polystyrene (EPS), extruded polystyrene (XPS), fiberglass and polyurethane foam (PUF). The effect of cooling design temperature and the coefficient of performance (COP) of air conditioners on the insulation thickness were also investigated. Fiberglass is observed as the most cost effective insulation material, considering life cycle performance of the insulation material for all the climate zones. It was also concluded that air-conditioner with higher COP can potentially reduce the insulation cost.

Jaya Goyal - One of the best experts on this subject based on the ideXlab platform.

  • Analysis of Passive Retrofitting Measures for Reduced Electricity Demand
    2019 International Conference on Nascent Technologies in Engineering (ICNTE), 2020
    Co-Authors: Jaya Goyal, S.s. Mantha, V.m. Phalle
    Abstract:

    The aim of this work is to determine the effective passive Measures to enhance the thermal comfort of the building envelop. Passive Measures are those Measures which reduce electricity demand but do not require any electricity to operate. The building components such as walls, roof and window are exposed to solar radiation and outside air temperature. Heat is conducted from exterior environment into the interior of the building envelop through these channels, wherein majority (approx. 60%) is conducted by walls and roof. Envelop insulation is considered as an efficient Retrofitting Measure to reduce heat gain from walls and roof. In this study, a techno-economic model has been investigated to obtain optimum insulation thickness (OIT) for the residential buildings in the three climate zones of India. Four types of commonly used insulation materials analysed are: expanded polystyrene (EPS), extruded polystyrene (XPS), fiberglass and polyurethane foam (PUF). The effect of cooling design temperature and the coefficient of performance (COP) of air conditioners on the insulation thickness were also investigated. Fiberglass is observed as the most cost effective insulation material, considering life cycle performance of the insulation material for all the climate zones. It was also concluded that air-conditioner with higher COP can potentially reduce the insulation cost.

  • Analysis of Passive Retrofitting Measures for Reduced Electricity Demand
    2019 International Conference on Nascent Technologies in Engineering (ICNTE), 2019
    Co-Authors: Jaya Goyal, S.s. Mantha, V.m. Phalle
    Abstract:

    The aim of this work is to determine the effective passive Measures to enhance the thermal comfort of the building envelope. Passive Measures are those Measures which reduce electricity demand but do not require any electricity to operate. The building components such as walls, roof and window are exposed to solar radiation and outside air temperature. Heat is conducted from exterior environment into the interior of the building envelope through these channels, wherein majority (approx. 60%) is conducted by walls and roof. Envelope insulation is considered as an efficient Retrofitting Measure to reduce heat gain from walls and roof. In this study, a techno-economic model has been investigated to obtain optimum insulation thickness (OIT) for the residential buildings in the three climate zones of India. Four types of commonly used insulation materials analysed are: expanded polystyrene (EPS), extruded polystyrene (XPS), fiberglass and polyurethane foam (PUF). The effect of cooling design temperature and the coefficient of performance (COP) of air conditioners on the insulation thickness were also investigated. Fiberglass is observed as the most cost effective insulation material, considering life cycle performance of the insulation material for all the climate zones. It was also concluded that air-conditioner with higher COP can potentially reduce the insulation cost.

Simon Pallin - One of the best experts on this subject based on the ideXlab platform.

  • Probabilistic Risk Assessment of Energy Efficient Retrofitting Techniques - Focus on Multi-family Dwellings and the Effects of Changing Air Movements
    2020
    Co-Authors: Simon Pallin
    Abstract:

    Many of the residential buildings in Sweden have a large need of Retrofitting; a result of insufficient maintenance and natural decay due to their predicted end of service life. These buildings must be taken into consideration in a near future where new and adapted technical solutions are required, suitable for the present conditions and the new demands of energy use. In Sweden, moisture safety is one of the concerns when designing for a Retrofitting Measure in residential buildings. Critical moisture levels in building materials increases the risk of developing mold and rot which can affect the performance of a building, durability and indoor environment, thus the human health. In terms of moisture safety, several concerns arise when choosing the most suitable technical solution for a Retrofitting Measure. One challenge is to find a solution with a low risk of future moisture related damages. In addition to knowledge and expertise, a technical solution for the Retrofitting of the existing building envelope, may require a holistic view in order to understand and estimate the future performance of a building post-retrofit. The main purpose of the thesis is to identify and estimate possible consequences of changing air movements in residential buildings when performing different Retrofitting Measures. In a proactive manner, analyze new recommended Retrofitting techniques in concerns of moisture safety and with the intention of providing a value of reliability. If the risks associated with different Retrofitting Measures are estimated, also the effect and potential economical impact on the Swedish building stock can be analyzed. The approach is to identify the number of buildings that can use the Retrofitting technique; the probability that the technique will be used and the probability for severe moisture related damages post-retrofit. The final outcome is an indication of the potential costs for the stakeholders of the Swedish building stock, if a specific Retrofitting technique is used. An existing risk analysis approach, a mode of procedure, has been improved and evaluated in a case study of a Retrofitting technique. The model proved to be useful and yielded the expected value of risk as intended. Further the risk was implemented into statistical information on the Swedish building stock and the final result yielded a potential economical impact of the studied Retrofitting Measure if constructed. A risk assessment of the case study estimated that the investigated Retrofitting technique could cost the stakeholders 360 million SEK on average. Consequently, a full scale probabilistic risk analysis in concerns of moisture safety is achievable, when predicting the future performance of Retrofitting Measures applied on Swedish residential buildings. Keywords: Retrofitting, risk assessment, hygrothermal, mold, costs

  • Risk Assessment of Hygrothermal Performance - Building Envelope Retrofit
    2020
    Co-Authors: Simon Pallin
    Abstract:

    A risk assessment of the hygrothermal performance for a building envelope retrofit investigates possible variations in energy performance, indoor environment quality and moisture safety and elaborates on the risks of exceeding defined acceptance criteria. These risks can be properly determined if including the variability of, by the investigated retrofit, most influencing parameters. As a result, the risks can also be presented with a variability, which subsequently can serve as a realistic and credible basis of judgment for risk tolerability decisions. In general today, the risks of exceeding defined performance criteria are assessed based on the results of a deterministic hygrothermal calculation tool; an evaluation, in which the influencing parameters, such as material properties, indoor and outdoor climates are provided with fixed values. The result of such deterministic analysis will represent a single best-estimate of the future hygrothermal performance of the building. Consequently, the performance of the Retrofitting Measure, as a result of a deterministic simulation, will likely be underestimated or overestimated, since such analysis provides no expected variation of the hygrothermal performance. Actually, the result of a deterministic analysis represents an average hygrothermal performance; it takes no consideration, what so ever, to the expected deviations from that specific performance or the probability of occurrence. However, the proposed risk assessment of a Retrofitting Measure will include the variability of the influencing parameters; thus, generating results which provides an expected deviation from the best-estimate and proper decisions can be made on the risks of exceeding acceptable performance levels. In addition, a risk assessment includes result, sensitivity and uncertainty analyses which enable an appropriate and credible evaluation of the retrofit, help to better understand the performance of the retrofit design and enable improvements of the design, if needed. This thesis thoroughly describes a hygrothermal risk assessment procedure, including both a qualitative and quantitative risk analysis, and provides concrete examples of practice through several case studies.

S.s. Mantha - One of the best experts on this subject based on the ideXlab platform.

  • Analysis of Passive Retrofitting Measures for Reduced Electricity Demand
    2019 International Conference on Nascent Technologies in Engineering (ICNTE), 2020
    Co-Authors: Jaya Goyal, S.s. Mantha, V.m. Phalle
    Abstract:

    The aim of this work is to determine the effective passive Measures to enhance the thermal comfort of the building envelop. Passive Measures are those Measures which reduce electricity demand but do not require any electricity to operate. The building components such as walls, roof and window are exposed to solar radiation and outside air temperature. Heat is conducted from exterior environment into the interior of the building envelop through these channels, wherein majority (approx. 60%) is conducted by walls and roof. Envelop insulation is considered as an efficient Retrofitting Measure to reduce heat gain from walls and roof. In this study, a techno-economic model has been investigated to obtain optimum insulation thickness (OIT) for the residential buildings in the three climate zones of India. Four types of commonly used insulation materials analysed are: expanded polystyrene (EPS), extruded polystyrene (XPS), fiberglass and polyurethane foam (PUF). The effect of cooling design temperature and the coefficient of performance (COP) of air conditioners on the insulation thickness were also investigated. Fiberglass is observed as the most cost effective insulation material, considering life cycle performance of the insulation material for all the climate zones. It was also concluded that air-conditioner with higher COP can potentially reduce the insulation cost.

  • Analysis of Passive Retrofitting Measures for Reduced Electricity Demand
    2019 International Conference on Nascent Technologies in Engineering (ICNTE), 2019
    Co-Authors: Jaya Goyal, S.s. Mantha, V.m. Phalle
    Abstract:

    The aim of this work is to determine the effective passive Measures to enhance the thermal comfort of the building envelope. Passive Measures are those Measures which reduce electricity demand but do not require any electricity to operate. The building components such as walls, roof and window are exposed to solar radiation and outside air temperature. Heat is conducted from exterior environment into the interior of the building envelope through these channels, wherein majority (approx. 60%) is conducted by walls and roof. Envelope insulation is considered as an efficient Retrofitting Measure to reduce heat gain from walls and roof. In this study, a techno-economic model has been investigated to obtain optimum insulation thickness (OIT) for the residential buildings in the three climate zones of India. Four types of commonly used insulation materials analysed are: expanded polystyrene (EPS), extruded polystyrene (XPS), fiberglass and polyurethane foam (PUF). The effect of cooling design temperature and the coefficient of performance (COP) of air conditioners on the insulation thickness were also investigated. Fiberglass is observed as the most cost effective insulation material, considering life cycle performance of the insulation material for all the climate zones. It was also concluded that air-conditioner with higher COP can potentially reduce the insulation cost.

Shao Zhenlin - One of the best experts on this subject based on the ideXlab platform.