Monitoring and simulation of the thermal performance of solar heated outdoor swimming pools

Hahne, Ε.; Kübler, R.

doi:10.1016/s0038-092x(94)90598-3

Cited by 40 publications

(21 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The results also show that indoor and outdoor pools without water movement, under similar control conditions, have similar evaporation rates [67].…”

Section: Mixed Poolssupporting

confidence: 52%

Swimming Pool heating systems: A review of applied models

Jiménez¹,

Carrillo²,

Alvarado³

2015

TECCIENCIA

View full text Add to dashboard Cite

How to cite: Jiménez, S.; Carrillo, V.; Alvarado, M., Swimming pool heating systems: a review of applied models, TECCIENCIA, Vol. 10 No. 19., 17-26, 2015 Bogotá, Colombia, ma.al.al.be@hotmail.com Received: 24-06-2015 Accepted: 23-07-2015, Available online: 03-08-2015 AbstractSwimming pool heating that is both efficient and ecological has become increasingly important to the development of new technologies and initiatives to protect the environment. This article, therefore, outlines previous research on the subject, acquired primarily from secondary sources and filtered based on criteria such as relevance, credibility, consistency, and applicability. Our goal is to provide an overview of the current literature and point out less-developed areas where research could be expanded. The results of the various studies suggest a widespread disagreement over calculating evaporation and make clear the need to generate integrative models that standardize this calculation.Keywords: heating, swimming pools, modeling, verification. ResumenLa climatización de piscinas de manera eficiente y ecológica aumenta en relevancia con el pasar del tiempo, debido al desarrollo de nuevas tecnologías e iniciativas de protección al medio ambiente. Por estas razones, este artículo describe investigaciones desarrolladas sobre el tema, adquiridas principalmente de fuentes secundarias y filtradas sobre criterios de selección sobre su relevancia, credibilidad, coherencia y aplicabilidad, para establecer un panorama sobre el estado del arte actual y sugerir la profundización de la investigación sobre las áreas que presenten menor desarrollo. Los resultados de los diferentes estudios sugieren una inconformidad generalizada sobre el cálculo de la evaporación y la necesidad por generar modelos integradores que estandaricen su cálculo.

show abstract

“…The results also show that indoor and outdoor pools without water movement, under similar control conditions, have similar evaporation rates [67].…”

Section: Mixed Poolssupporting

confidence: 52%

Swimming Pool heating systems: A review of applied models

Jiménez¹,

Carrillo²,

Alvarado³

2015

TECCIENCIA

View full text Add to dashboard Cite

show abstract

“…Consequently, multiple reflections occur in water. We suppose that the radiation that penetrates water is finally completely absorbed and contributes to the heating of the water [1].…”

Section: ) Energy Received In Passive Modementioning

confidence: 99%

“…However, the advantages of using solar energy for heating of water in swimming pools fostered a number of practical applications and theoretical studies mainly in Germany. In one of the applications, for six pools, with a total volume of 4185 m 3 , the gas consumption is reduced to 40% and the efficiency of the solar installation is 38% [1]. In the case of a pool covered during night, the energy consumption for maintaining a constant temperature of 28.9 o C diminishes from 8.4 GJ/day to 5.8 GJ/day [2].…”

Section: Introductionmentioning

confidence: 99%

Feasibility of a solar swimming pool in the western part of Romania

Luminosu

Sabata

2013

2013 IEEE 8th International Symposium on Applied Computational Intelligence and Informatics (SACI)

View full text Add to dashboard Cite

We propose a framework for calculation of the energy balance of an outdoor swimming pool intended for potential users of solar energy in the region of Timisoara, Romania. The algorithm is based on physical and practical considerations, on existing experience in the field and on measurements of solar radiation. According to the calculations, a solar swimming pool with an area of 160 m 2 has energy losses of 564.02 GJ and it receives 336.69 GJ of energy in passive mode from solar radiation in the period April-September. A proposed solar system with a collecting area of 81 m 2 provides 119.36 GJ of thermal energy in the same period. A quantity of 107.97 GJ has to be supplied from classical sources.

show abstract

“…Tous les auteurs s'accordent pour attribuer au paramètre e w une valeur commune de 96 %, de telle sorte que ce rayonnement, qui se produit entièrement dans l'infrarouge, est l'une des composantes du bilan thermique les plus faciles à calculer (TALATI et STENSTROM, 1990 ;HAHNE et KÙBLER, 1994).…”

Section: Flux De Rayonnement De L'eau Vers L'atmosphèreunclassified

“…Son évaluation théorique, particulièrement délicate, a rapidement été abandonnée au profit de formules empiriques, qui, bien que très diversifiées, respectent globalement la forme suivante (ROQUES, 1979;ATKINSON et HARLEMAN, 1983 ;HAHNE et KÙBLER, 1994) :…”

Section: Flux De Rayonnement De L'atmosphère Vers L'eauunclassified

Bilan thermique sous climat tempéré des lagunes aérées et naturelles

Naméche¹,

Vassel²

2005

rseau

View full text Add to dashboard Cite

SUMMARYVery few studies hâve ever focused on the thermal balance of a wastewater treatment process, despite its major impact on various aspects of sanitary engineering, such as biological growth, oxygen transfer and, most importantly, purification kinetics. This lack of knowledge is particularly worrying for the design of aerated lagoons and waste stabilization ponds, since thèse two extensive treatment technologies are extremely dépendent on climatic conditions and subject to high thermal variations. In temperate régions, a pond annual température range can even exceed 20°C, while a 10°C variation will induce a more than 60% drop or increase in its removal yield. Our paper intends to présent a comprehensive température prédiction model which accounts for the main beat loss and gain ternis exchanged through the pond surface and walls.Our approach includes six différent energy inputs and outputs, namely: solar radiation, air-water surface convection, atmospheric radiation, back surface radiation, evaporation and ground-water-walls convection. Each of thèse components was described extensively by means of a literature review of ail previous efforts made to predict equilibrium température in lakes, rivers, saitgradient solar ponds, cooling tanks, even outdoor pools. The best aspects of each prédiction model were then incorporated into a new computer model developed as two différent but complementary variants: one for steady-state conditions and the other for continuous and therefore also transient simulations. The main différence between thèse two approaches is that the first one neglects enthalpy variation while the second one takes the form of a differential équation, with basin températures being estimated by an itérative calculation procédure and a numerical intégration method, respectively. Two hypothèses were necessary to develop this model. The first one posits that pond hydrodynamics correspond to completely mixed conditions. Such Eau, 12(1), 1999 T. Namèche etJ.L. Vasel hydraulic behavior is extremely fréquent in aerated lagoons and waste stabilization ponds in temperate climates, but less so in tropical or Mediterranean régions, where thermal balances appear much more complex since stabilization ponds are often thermally stratifled. The second hypothesis is that ail radiation fluxes received by the ponds are completely absorbed by the pond's contents and are never reflected, even partially, by their bottoms or walls.This model, which is in fact the thermal balance of the basins, relies mainly on meteorological factors and pond characteristics. Only two out of the six estimated fluxes -evaporation rates and solar radiation -are measured directly in situ. It seemed too difflcult to estimate them, since prédictive équations found in literature constantly gave unsatisfactory results.To establish the validity of this model, expérimental data were collected at a wastewater treatment plant located in the southem part of Belgium. This plant consists of a séries of two aerated lagoons and four waste stabilization...

show abstract

Monitoring and simulation of the thermal performance of solar heated outdoor swimming pools

Cited by 40 publications

References 3 publications

Swimming Pool heating systems: A review of applied models

Swimming Pool heating systems: A review of applied models

Feasibility of a solar swimming pool in the western part of Romania

Bilan thermique sous climat tempéré des lagunes aérées et naturelles

Contact Info

Product

Resources

About