• 에너지공학
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• 제24권1호
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• pp.69-77
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• 2015

본 연구에서는 보정된 모델링 건물을 대상으로 PMV 변수에 대한 데이터베이스를 구축하였고, 다중회귀분석을 통하여 PMV 회귀모델을 도출하였다. PMV 회귀모델은 민감도 및 데이터 분석을 통하여 단순화하여 단순 PMV 회귀모델을 제시하였다. 단순 PMV 회귀모델과 Fanger PMV 모델에 대한 MAE 및 RMSE 검증을 통하여 단순 PMV 회귀모델이 Fanger PMV 모델을 대체할 수 있는 것으로 분석되었다. EnergyPlus의 EMS(Energy Management System)를 이용하여 보정된 모델링 건물에 PMV 회귀모델 제어를 적용하였다. 단순 PMV 회귀모델과 Fanger PMV 모델 제어의 온열 쾌적도를 비교한 결과, 두 제어 모두 공조기간 동안 약 90% 이상이 온열쾌적 범위를 만족하였고, 온열 쾌적 제어의 특징인 설정 PMV를 만족하는 설정온도에 의하여 제어되는 것으로 나타났다.

• 설비공학논문집
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• 제19권11호
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• pp.761-769
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• 2007

The purpose of this study is to present a simplified model of predicted mean vote (PMV) using multiple regression analysis. We performed the experiments and the numerical calculations in the lecture room during summer and winter to simplify PMV. And the multiple regression analysis on PMV was conducted to estimate the contribution of independent variables toward PMV. From the multiple regression analysis, we found that the effect of independent variables on PMV followed in order, clo value>air temperatur>air velocity>mean radiant temperature>relative humidity. And the simplified PMV was proposed through a few assumptions and then was compared with original PMV. They had a good agreement with each other. Additionally, we compared the simplified PMV with EDT. We expected that the simplified PMV can be more useful than EDT to evaluate the thermal comfort in the place, where radiation is dominant. But the comfort range of the simplified PMV should be adjusted to predict the exact thermal comfort in the future.

• 토지주택연구
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• 제12권2호
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• pp.99-108
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• 2021

이 연구의 목적은 한옥 거주환경의 쾌적성능에 대한 정량적 자료를 제시하고 개선 요인을 도출하는 데 있다. 먼저 정책적 성공사례로서 현대(신(新))한옥의 하나인 전남 화순군 잠정햇살마을 한옥단지를 대상으로 건구온도, 복사온도, 상대습도, 풍속 등 열쾌적성 평가의 영향 요소를 측정했다. 이어 도출 데이터를 적용하여 PMV(Predicted Mean Vote)를 산출하는 열환경 시험을 수행했으며, 사용자 대사율과 의복량을 변수로 설정하여 L.C.PMV(Life-Cycle PMV)와 N.PMV(Normal PMV)의 두 가지 유형으로 구분하여 평가를 진행했다. 그 결과, 여름 및 겨울철 시점을 전후하여 한옥 공간의 PMV 증감 동향이 뚜렷했으며, 특히 대서 및 대한 시점의 PMV는 쾌적구간을 완전히 벗어난다는 시험 결과를 확인했다. 아울러 겨울철 PMV의 변화 속도가 여름철보다 더 빠른 것으로 나타났다. 이러한 결과를 통해 신한옥의 쾌적성능 증진을 위해 단열성 개선이 우선 요인임이 도출되었으며, 설계 및 시공 단계에서 연계 검토가 요구된다.

• 감성과학
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• 제17권2호
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• pp.55-62
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• 2014

본 연구에서는 PMV 온열환경이 변화함에 따라 LED광원의 조도가 시작업 성능에 미치는 영향을 분석하기 위해 오류검색수정작업 평가지를 개발하였고, 오류검색수정작업의 정확도 및 소요시간을 분석하였다. 또한 작업을 진행하면서 느끼는 시각피로도에 대한 설문을 실시하여 주관적인 평가도 병행하였다. 본 실험의 PMV 온열환경은 온도 $17{\pm}1{\sim}29{\pm}1^{\circ}C$, 습도 $50{\pm}5{\sim}60{\pm}5%$의 범위에서 PMV 값에 따라 4가지 형태를 구성하였으며, LED광원의 조도는 400lx, 700lx, 1000lx의 3가지 형태로 구성하여 실험을 진행하였다. 오류검색수정작업의 정확도(LED p 값=0.058, PMV*LED p값=0.083) 및 소요시간(LED p값=0.004, PMV p값=0.000)은 PMV 온열환경과 LED광원의 조도 변화에 모두 유의하였으나, 피로도는 PMV 온열환경(p값=0.003)과 유의한 차이를 보였다.

• 감성과학
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• 제16권3호
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• pp.311-318
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• 2013

본 연구는 인간의 생리적 지표 중 하나인 안면 피부온도를 활용하여 PMV 지표 값에 기반하여 조성된 쾌적/불쾌 실내 환경을 적절하게 구분할 수 있는지 그 타당성을 살펴보고자 하였다. 이를 위해 쾌적 실내 환경에 해당되는 PMV 지표 값을 기준으로 물리적 환경을 쾌적 실내 환경과 불쾌한 실내 환경으로 각각 구분하고, 구분된 환경내에서 재실자의 안면 피부온도를 측정하였다. 그 결과, PMV 지표 값으로 구분된 쾌적 실내 환경과 불쾌한 실내 환경에서의 재실자의 안면 피부온도가 서로 차이를 보이는 것으로 나타났다. 이는 안면 피부온도가 PMV 지표에 기반한 쾌적한 실내 환경 조성에 있어 활용될 수 있음을 시사한다. 그러나 쾌적한 실내 환경에 비해 불쾌한 실내 환경에서 안면 피부온도가 낮게 나타나는 결과를 통해 오히려 PMV 지표 값에 기반을 두고 조성되는 쾌적/불쾌환경이 타당하지 않을 수 있음도 시사한다.

• 설비공학논문집
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• 제15권10호
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• pp.870-878
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• 2003

The maintenance of thermal equilibrium between the human body and its environment is one of the primary requirements for health, wellbeing and comfort. For the effective control of indoor thermal environment, thermostat or humidistat is used. But, it is not sufficient to control the indoor thermal environment using only one or two parameters as human response for the indoor comfortable environment. So an environmental thermal index is required for the control of indoor thermal environment effectively. In this study, a PMV sensor has been developed which has integrated from various kinds of individual sensors for temperature, humidity, air velocity, radiant temperature. After applying the PMV and PPD equation, it is possible to monitor the indoor thermal environment with the sensor system, which is adopted to the circuit for optimization according to the human response with the metabolic rate and activities. The measurement was carried out to verify the performance of the integrated sensor system in comparison with existing measurement system, the PMV meter. As a result, the possibility of applying the PMV sensor to control the indoor thermal environment simultaneously was examined.

• 한국환경보건학회지
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• 제41권6호
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• pp.389-396
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• 2015

Objectives: A hospital is a complex building that serves many different purposes. It has a major impact on patient's well-being as well as on the work efficiency of the hospital staff. Thermal comfort is one of the major factors in indoor comfort. The purpose of this study was to determine thermal comfort in various locations in a hospital. Methods: Various indoor environmental conditions in a general hospital were measured in February 2014. The predicted mean vote (PMV) and carbon dioxide ($CO_2$) concentration were measured simultaneously in the lobby, office, restaurant, and ward. Results: The ward was the most thermally comfortable location (PMV=0.44) and the lobby was the most uncomfortable (PMV = -1.39). However, the $CO_2$ concentration was the highest in the ward (896 ppm) and the lowest in the lobby (572 ppm). The average PMV value was the most comfortable in the ward and the lowest in the lobby. In contrast, for concentration of carbon dioxide, the highest average was in the ward and the lowest in the lobby. Due to air conditioner operation, during operating hours the PMV showed values close to 0 compared to the non-operating time. Correlation between PMV and $CO_2$ differed by location. Conclusion: The PMV and concentration of carbon dioxide of the hospital lobby, office, restaurant and ward varied. The relationship between PMV and carbon dioxide differed by location. Consideration of how to apply PMV and carbon dioxide is needed when evaluating indoor comfort.

• 한국태양에너지학회 논문집
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• 제33권4호
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• pp.15-22
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• 2013

The purpose of this study is to analyse the effects of air conditioned room controlled by PMV(Predicted Mean Vote)for energy consumption and human comfort in office building. The 'EnergyPlus' was used for the evaluation of indoor thermal environment and energy consumption by the controls of room temperature and PMV. The result indicates that the PMV control could prove more profitable method for improvement of indoor thermal environment and energy conservation. Consequently, PMV control has a distinct advantage over most other control methods. An additional study is required to establish the various thermal comfort control for rooms on the basis of this work.

• 대한건축학회논문집:구조계
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• 제34권10호
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• pp.37-44
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• 2018

In this study, the effects of considering hourly metabolic rate variations for predicted mean vote (PMV) control on the heating and cooling energy and greenhouse gas emission were investigated. The case adopting PMV control taking the hourly metabolic rate into account was comparatively analyzed against the conventional dry-bulb air temperature control, using a detailed simulation technique. Under the assumption that all the apartments in Korea adopt the PMV control incorporating real-time metabolic rate measurements, nationwide reductions of primary energy and greenhouse gas emission were analyzed. As a result, PMV control considering hourly metabolic rate variations is expected to reduce national primary energy by 6.2% compared to conventional dry-bulb air temperature control, corresponding to reduction of 10,342 GWh. In addition, it turned out that 6.6% of tCO2 emission can be reduced by adopting PMV control, corresponding to nationwide reduction of greenhouse gas emission by approximately 1,720,000 tCO2.

• 한국의류산업학회지
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• 제20권1호
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• pp.63-74
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• 2018

The purpose of this study is to investigate the differences in riding characteristics and helmet wearing conditions between bicycle and PMV riders so that the basis data necessary for the development of suitable helmets for each group is provided. For this purpose, riding characteristics and helmet wearing conditions of bicycle and PMV users were investigated using online survey method and then the survey results were interpreted by in-depth interview conducted for bicycle and PMV users. The online survey results showed that the PMV group showed shorter driving distance and more driving frequency than bicycle group. This short driving distance was due to the limitation of battery capacity of PMVs. Helmet wearing rate was significantly lower in PMV group than in bicycle group, which was associated with relatively low chances to drive long distance on the motorway. In the PMV group, the 'urban helmets' were mainly used, in which the appearance of helmet was priorized, but in the bicycle group, the 'road cycle helmets' were mainly used, in which the light weight or ventilation were priorized. Urban helmets caused stronger pain and more fitting problems than road cycle helmets because the head shapes of Koreans were not properly applied to the helmet design. Since the fitting problem and pain intensity were the important causes that making PMV users not wear the helmets, it is necessary to develop the urban helmets reflecting the head shapes of Koreans in order to increase the helmet wearing rate of the PMV users.