Table 2 - uploaded by Alberto Conejero
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Smart control systems and new technologies are necessary to reduce the energy consumption in buildings while achieving thermal comfort. In this work, we monitor the thermal evolution inside a scale reduced closed space whose exterior and/ or interior wall faces have been painted with a coating solution. Based on the experimental data obtained under...
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Developing occupant presence monitor and sensor station incorporated into heating and cooling system controllers in residential buildings.
Abstract
This study proposes an occupant-centric control strategy for residential heating systems, aiming to enhance thermal comfort and reduce energy consumption. A sensor station utilizin...
Citations
... This is the case with the new thermal coating being tested in reduced scale models at the Universitat Politècnica de València, Spain. The study yielded reductions of interior temperatures by 7.4% [25]. ...
... The procedure for adjustion consists in separating the studied period in the day and night and calculating the best value to fit the simulation curves to the experimental data. This method has been tested in similar investigations [25,47]. The tuned coefficients are presented in Table 2. Based on the tuning strategy described, it was possible to obtain a very low percentage difference between the simulation and the experimental data for the day studied. ...
... The first effort to minimize the cooling requirements was based on apply coating solutions over exterior surfaces. In [25] an experiment was developed to determine the thermal properties of a commercial coating solution. One of the results of this study was the convection coefficient of a surface with a layer of coating solution with a thickness of 0.5 mm. ...
Non-conventional thermal zones are low-cost and ecology friendly alternatives to the housing needs of populations in various situations, such as surviving natural disasters or addressing homelessness. However, it is necessary to guarantee thermal comfort for occupants, while aiming to minimize energy consumption and wastage in refrigeration systems. To reduce the cooling requirements in non-conventional thermal zones it is necessary to model the structure and analyze the principal factors contributing to internal temperature. In this paper, a geodesic dome is modellingusing the lumped parameter technique. This structure is composed of a wooden skeleton and wooden floor, with a canvas surface as its exterior. The mathematical model was tuned using experimental data, and its parameters were classified using Monte Carlo sensitivity analysis. The mathematical model was used to evaluate the impact on internal temperature and occupants’ comfort when two strategies are considered. The results obtained indicatee internal temperature reductions down to a range of 7% to 11%; this result is reflected directly in the energy used to refrigerate the thermal zone, contributing to the objective of providing houses with lower energy consumption.
... During the whole investigation, staff activities were typing, talking, or meeting. The intrinsic clothing insulation of the composite ensemble was estimated based on literature [18][19][20][21][22]. A total of 2520 valid samples were used for this analysis. ...
Clothing insulation is an important factor in the thermal comfort research, and thus an accurate clothing insulation model is much required. This study developes a new model, which takes into account the sex difference for the dress. Its accuracy was verified experimentally, and the established thermodynamic model is useful to predict occupants? clothing behavior and to evaluate thermal comfort.
Çalışmada, binaların yapı kabuğunun en yüksek yüzey alanana sahip dış duvarlarına uygulanan; beyaz boya, alüminyum, kırmızı tuğla, siyah boya, metal siyah kaplama, beton, mermer ve porselen-çini den oluşan sekiz çeşit kaplama ve boyalarına bağlı enerji, ekserji ve anerji incelemeleri yapılmıştır. Tüm incelemeler için TS 825’e ikinci iklim bölgesindeki Balıkesir ili kabul edilmiştir. Enerji tüketimi, ekserji miktarı ve Anerji değeri hesaplanmıştır. Enerji tüketimi hesapları için derece gün yöntemi kullanılmıştır. Derece gün hesapları için güneş hava sıcaklık değerleri hesaplanmıştır. Güneş hava sıcaklık değerleri hesaplanırken sekiz çeşit kaplamalar ve boyalar için soğurganlık ve yayıcılık değeri tespit edilmiştir. Sonuç olarak, ekserji miktarı enerji tüketimine bağlı olarak ısıtma ve soğutma dönemi birlikte düşünüldüğünde kömür enerji kaynağı kullanan, beyaz boyalı dış duvar yüzeyi için, kuzey yönünde en yüksek 21.405 kWh/m2 ve en düşük ise doğal gaz enerji kaynağı kullanan metal siyah kaplamalı dış duvar yüzeyi için güney yönünde 5.118 kWh/m2 olarak tespit edilmiştir. Ek olarak bina dış duvarları için farklı boya veya kaplamalara bağlı dış duvar için sıcaklığa bağlı sönüm faktörü tespit edilmiştir.
