Room Gap Analysis of Thermal Comfort in Office Spaces: The Case of Office Space in The Barru Regent Tower Building, Indonesia (original) (raw)

A thermal comfort levels investigation of a naturally ventilated and air-conditioned office

8th WSEAS International Conference on Simulation, Modelling and Optimization, 2008

Abstract:-The purpose of this study is to investigate thermal comfort levels of a naturally ventilated and air-conditioner office. Field experiments conducted in an office room in Universiti Putra Malaysia (UPM) used survey questionnaires and physical measurements. When air conditioner was working, it was found that the office was slightly cool based on ISO 7730, but result of survey revealed that staff found condition to be cool. In naturally ventilated condition objective result showed that this office is uncomfortable but subjective study ...

Thermal comfort survey in office buildings in Bandung, Indonesia

2015

The comfort state of office building’s occupants is crucial since its related to the worker’s productivity. This comfort temperature of people from tropical climate might be different from temperate climate area. This study aimed to investigate thermal comfort and adaptive behaviour of occupants in office buildings with different ventilation modes: air-conditioned, mixed-mode, and free running. On February and March 2015, approximately 400 responses has been obtained through field surveys in three office buildings Bandung, Indonesia. The results has shown quite different comfort range between occupants in three ventilation modes: 24.7 oC, 26.3 oC, and 27.5 oC operative comfort temperature for FR, CL, and MM accordingly.

Thermal comfort analysis in office buildings with different air-conditioning systems

International Review of Applied Sciences and Engineering, 2018

It is a prime aim to ensure a suitable comfort level in case of office buildings. The productivity of office employees is directly influenced by the comfort. Thermal discomfort and poor indoor air quality deteriorate the intensity and quality of human work. We investigated the comfort in office buildings with on-site measurements during the summer season. The office buildings were operating with different HVAC (Heating, Ventilating and Air-Conditioning) systems: ducted fan-coil with suspended ceiling, installation, non-ducted fan-coil with floor-mounted installation, active chilled beam with fresh air supply. We evaluated the thermal comfort under PMV (Predicted Mean Vote), PPD (Predicted Percentage of Dissatisfied), the local discomfort based on DR (Draught Rate) and the IAQ (Indoor Air Quality) based on carbon dioxide concentration. The comfort measurements were evaluated. The measurements were evaluated with scientific research methods, comfort categories based on the requirement...

Thermal Comfort Studies in Naturally Ventilated Buildings in Jakarta, Indonesia

Abstract: Many thermal comfort studies have been conducted in offices, classrooms and dwellings, but few in public buildings such as cathedrals, museums and markets. A recent thermal comfort study has been conducted in three naturally ventilated (NV) buildings, a cathedral, a museum and a market, in Jakarta, between March and April 2014. There is a curiosity as to whether people doing slightly different activities with slightly different clothing insulation values, in different building types, might have different comfort temperatures. Approximately the same number of subjects (respondents) participated in the study of each building. Using the same monitoring equipment, results of this study show that subjects’ comfort temperatures were found to be similar in all of the buildings; however, it was found that the spread of the subjects’ comfort range in the three buildings was significantly different. Keywords: adaptation; air conditioning (AC); air temperature; clothing insulation; metabolic rate; comfort range; comfort temperature; Indonesia; naturally ventilated building

An Energy Efficiency Assessment of the Thermal Comfort in an Office building

Energy Procedia

People spend about 90% of their time indoors, so a comfort indoor thermal environment is essential for the satisfaction, productivity and wellbeing of the building occupants. Assessment of the indoor thermal comfort is the key point for building HVAC system design and operation to provide a comfort indoor environment to building occupants. Predicted Mean Vote (PMV) model is the most widely used tool for the indoor thermal comfort assessment. In this study, the application of the PMV model in Qatar with dry, subtropical desert climate is evaluated. An experiment was conducted in an office building in Doha, Qatar to reveal the occupant perception of indoor thermal comfort. Using collected data, the PMV indexes were calculated using Fanger's theory and compared with the Actual Thermal Sensation (ATS) of the occupants to assess the applicability of the PMV model to predict the indoor thermal comfort in air conditioned buildings in the climate zone of Qatar. The corresponding occupants' satisfaction level with the indoor thermal comfort and their adaptive behavior were also assessed.

Investigation of Thermal Comfort in University Offices: The Case of the Bingöl University

Civil Engineering and Architecture, 2022

Thermal comfort and indoor air conditions affect the mental and physical performance of users. People spend most of their time indoors. The thermal comfort conditions of these places directly affect the performance of individuals. Today, there are few examples of interior spaces with suitable conditions in terms of thermal comfort. Academician work offices in university buildings are also places where academics spend a long time. In this context, it is important to investigate and examine the thermal comfort conditions of these places and to put forward suggestions for improvement. For this reason, in this study, examinations were made in the offices of academicians in the Faculty of Engineering and Architecture. Within the scope of the study, 9 (nine) offices orientated in different directions were determined. Temperature, humidity, air movement and radiant temperature values were measured in the offices during January-February 2021, which is the period when the spaces in these offices should be heated. Measurements were made using a multi-functional air conditioner. The data obtained as a result of the measurements were interpreted according to the ASHRAE standard 55 and ISO 7730 limit values. It has been understood that the mean comfort temperature value found in all the offices of the university staff is in compliance with ASHRAE standards and the relative humidity of the air is insufficient.

Evaluation of thermal comfort and indoor air quality in offices

Building Research and Information, 1992

Professor Derek Croome and his colleagues in their CIB Montreal paper present the results of an investigation into the indoor environment of a naturally ventilated office and conclude that data from laboratory tests are insufficient. A field test method is established which allows an investigation to take into account window and door opening patterns and peoples reactions to air temperature, fresh air and movement. Le professeur Derek Croome et ses collegues du cm Montreal presentent dans leur article les resultats d'une enquete sur l'environnement interieur d'un bureau naturellement aere. Ils conclusent que les donnees des epreuves de laboratoire sont insuffisantes. Un systeme d'essais 'sur Ie terrain' a ete etabli, permettant une investigation qui tient compte a l'ouverture des portes et des fenetres, et aux reactions des occupants a la temperature, a la fraicheur et aux mouvements de l'air.

Comfort temperature in air conditioned office buildings: case study of Indonesia and Singapore

2015

Air-conditioning system has been a basic feature in many office buildings, especially in tropical climate where buildings are exposed to solar radiation all year round. However, air conditioning is a leading source of energy consumption. Efficient energy consumption is highly desirable for commercial, for-profit entities occupying offices. A field study in two countries; Indonesia and Singapore, has been conducted to investigate office building occupants’ thermal comfort. In 2015, questionnaire survey as well as physical parameter measurements were collected from each country. Analysis shows that occupants of air-conditioned building with window-opening behaviour has higher comfort temperature, compared to cooling mode only. The results of this study could be used to better understand comfort temperature in tropical countries.

Experimental Study on Thermal Comfort Towards Increasing Temperature Set-Points in Air-Conditioned Office Spaces in a Tropical Region: A Case Study in Thailand

Nakhara : Journal of Environmental Design and Planning

Many countries propose indoor temperature set-points of air-conditioned offices to be comfortably sustainable and to reduce energy consumption. Even though there are recommendations for the optimum temperatureset-points, it is questionable how those values could be applied to the actual situation in a tropical region. This study aims to survey thermal performance and estimate thermal comfort in different set-points. In 2019, two air-conditioned office buildings were tested by increasing set-points from the actual value between 23 °C and 25 °C. Data loggers measuring thermal variables were installed in the offices and the questionnaire was distributed to evaluate human response. Considering the ASHRAE psychometric chart, thermal environments of both cases on the day of a normal set-point were low; falling inside in the 1.0 clo zone. Thermal environments gradually moved from the 1.0 clo zone to the 0.5 clo zone, however, some of them were out of both comfort zones due to high absolute...

Thermal Comfort Assessment of an Office Building in Tropical Climate Condition

MATEC Web of Conferences

As a lot of people spend their time indoor, indoor thermal comfort will affect the performance of the occupants in terms of health, comfort and productivity. This paper aims to investigate the thermal comfort of an office building constructed using low cost materials in tropical climate condition. That has been achieved by investigating the PMV using the CBE thermal comfort tool in the post-graduate office building in the solar research site in UTP. The experimental measurements have been conducted at two different cases; without ventilation and with air-conditioned in the office building. The thermal comfort of the office building is assessed by using the ASHRAE thermal sensation scale. Results have demonstrated that the office room without ventilation is hot and not suitable for occupants to work at such thermal environment. Thermal comfort of the room with air-conditioning is warm and is slightly better than the room without ventilation as the PMV has been improved by around 60%....