The CPMV* for assessing indoor thermal comfort and thermal acceptability under global solar radiation in transparent envelope buildings

Zhang, Huan; Yang, Xueqing; Zheng, Wandong; You, Shijun; Zheng, Xuejing; Ye, Tianzhen

doi:10.1016/j.enbuild.2020.110306

Cited by 28 publications

(23 citation statements)

References 25 publications

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“…In the PMV equation, the radiation sensitive heat loss component is expressed in terms of the radiation heat transfer coefficient and the difference between the mean temperature of the outer surface of the clothed body and the mean radiant temperature by long waves. The beam and diffuse components of the solar radiation heat gain proposed by Zhang et al (2018Zhang et al ( , 2020, in turn, did not undergo any balance. Consequently, the influence of radiant heat transfer on the body heat balance is significantly increased.…”

Section: Discussionmentioning

confidence: 89%

“…Even though the CPMV model does not consider the diffuse radiation effects, PMV and PPD adjusted with this model were significantly higher than in other models. The results indicated that the model developed by Zhang et al (2018Zhang et al ( , 2020 might overestimate the solar radiation effect on occupants' thermal perception and comfort in temperate climates, as in Florianópolis. The models were tested only in the climate context of Tianjin, China, which is characterized by hot and humid summers and cold and dry winters (Dwa in Köppen-Geiger Scale).…”

Section: Discussionmentioning

confidence: 95%

“…Afterwards, the authors conducted a field experiment and concluded that the CPMV presents a significant deviation of the thermal sensation votes collected when in high diffuse solar radiation exposition (ZHANG et al, 2020). Therefore, they proposed the CPMV* index, which includes a diffuse solar radiation component (Equation 11).…”

Section: Corrected Predicted Mean Vote (Cpmv)mentioning

confidence: 99%

“…This model presents a relevant limitation: it includes the beam solar radiation effect only. However, the authors published a model correction, the CPMV*, including a diffuse solar radiation component (ZHANG et al, 2020).…”

Section: Considerations On Solar-adjustment Modelsmentioning

confidence: 99%

See 3 more Smart Citations

Assessment of thermal comfort in workstations located near highly glazed façades: solar-adjustment models

Pinto

Westphal

2022

Ambient. constr.

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Although solar radiation exposure strongly impacts people's thermal comfort, workstations are frequently positioned close to glazed façades. Solar adjustment models have been developed to include the solar radiation impact on people's thermal comfort, which the Fanger and Adaptative models do not address. Nonetheless, those models present differences in their calculation procedures, which have not been thoroughly investigated. This study aims to verify differences in thermal comfort results by applying various solar adjustment models of thermal comfort indices for a person sitting close to a highly glazed façade in an office room. The analyses were based on indoor environment data from computer thermal simulations in EnergyPlus for a temperate climate in Brazil. The results for the same room demonstrated significant differences. For example, the hourly difference between the solar-adjustment models reached 1.7 in PMV, and the MRT was up to 17.6 ºC higher than the mean result calculated through EnergyPlus. The need for solar radiation incidence control is also reinforced. Although the results were not compared with measurement data or people's thermal perception, the limitations and advantages of each solar adjustment model were numerically analysed, broadening the discussions about the solar adjustment models and the consequences of the choices among them.

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Section: Discussionmentioning

confidence: 89%

Section: Discussionmentioning

confidence: 95%

Section: Corrected Predicted Mean Vote (Cpmv)mentioning

confidence: 99%

Section: Considerations On Solar-adjustment Modelsmentioning

confidence: 99%

See 2 more Smart Citations

Assessment of thermal comfort in workstations located near highly glazed façades: solar-adjustment models

Pinto

Westphal

2022

Ambient. constr.

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“…Radiant exchange, as previously mentioned, is significant in terms of thermal comfort in spaces (both indoors and outdoors) [26,27]. For this reason, many researchers have studied radiant solutions as a conditioning system since they can be considered among the technologies capable of meeting the requirements of sustainable heating and cooling [28].…”

Section: Active Surfaces (Cooling and Heating Ceiling Pannel)mentioning

confidence: 99%

Adaptative Cover to Achieve Thermal Comfort in Open Spaces of Buildings: Experimental Assessment and Modelling

et al. 2021

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The global need for healthy and safe open spaces faces continuous temperature rise due to the heat island phenomenon and climate change. This problem requires new strategies for improving the habitability of open spaces (indoor and outdoor conditions in buildings). These techniques include reducing solar radiation, reducing the temperature of surrounding surfaces, and reducing the air temperature. The radiant solutions are essential for outdoor comfort, both in summer and in winter. They are easy to integrate into open spaces. This study explores a new concept of radiant solutions adapted for outdoor spaces. The solution was evaluated in a test cell to obtain its thermal behaviour in different operation conditions. Solutions were optimised for operating in a cooling regimen since it has been identified that the demands for comfort in open spaces in hot climates during the most severe summer months are more pronounced. Experimental results have allowed getting an inverse model to analyse the thermal behaviour of the solution. The inverse model achieved high precision in its estimations. Also, it facilitated knowing the radiant and convective effects. Only the radiant heat flux is relevant in open spaces with a low level of air confinement. Finally, the discussion describes the application of the proposed model. The model allows the replicability of the solution—creating new designs (integration) or evaluating into different operating conditions of the system. This discussion demonstrates the high level of knowledge acquired in the characterisation of the solution studied.

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Review on Thermal Energy Efficiency Using Gypsum Integrated Phase Change Materials in Buildings

Vaishnav

Lazarus

Bansal

et al. 2021

Lecture Notes in Civil Engineering

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The CPMV* for assessing indoor thermal comfort and thermal acceptability under global solar radiation in transparent envelope buildings

Cited by 28 publications

References 25 publications

Assessment of thermal comfort in workstations located near highly glazed façades: solar-adjustment models

Assessment of thermal comfort in workstations located near highly glazed façades: solar-adjustment models

Adaptative Cover to Achieve Thermal Comfort in Open Spaces of Buildings: Experimental Assessment and Modelling

Review on Thermal Energy Efficiency Using Gypsum Integrated Phase Change Materials in Buildings

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