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Dolaana Khovalyg

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Related publications (71)

Page 3 of 4

Rethinking local thermal sensation prediction: The role of heat flux over skin temperature in personalized models

Jaafar Ibrahim Younes, Dolaana Khovalyg

As personal environmental control systems (PECS) gain prominence over conventional whole-space conditioning, accurately predicting personalized and localized thermal sensation (TS) becomes increasingly important. This study systematically evaluates the rel ...

2025

Low-Temperature Radiant Cooling and its Effect on the Local Indoor Thermal Environment

Dolaana Khovalyg

Radiant systems allowing high-temperature cooling have been considered energy-efficient solutions for indoor climatization. In addition, radiant systems prevent local discomfort, such as air movement and vertical air temperature difference. However, the ap ...

Springer Science and Business Media Deutschland GmbH2025

Quality criteria for multi-domain studies in the indoor environment: Critical review towards research guidelines and recommendations

Dolaana Khovalyg, Giorgia Chinazzo, Mandana Sarey Khanie, Verena Marie Barthelmes, Matteo Favero

The perception, physiology, behavior, and performance of building occupants are influenced by multi-domain exposures: the simultaneous presence of multiple environmental stimuli, i.e., visual, thermal, acoustic, and air quality. Despite being extensive, th ...

PERGAMON-ELSEVIER SCIENCE LTD2022

Transient thermal response of opaque building envelope elements: EPFL campus case study

Dolaana Khovalyg, Mohammad Rahiminejad

The building envelope acts as a shield against varying weather conditions and modulates thermal energy flow between outdoors and indoors. The choice of layers used in the assembly impacts the heat loss and gain through the wall structure and potentially ca ...

2021

Modular Radiant Floor Heating and its Effect on Local Thermal Comfort

Diego Rodrigue E Houtart, Dolaana Khovalyg, Dusan Licina, Han-Yun Jhang

Radiant floor heating is widely recognized for its low-energy consumption and high efficiency. Traditional systems, however, typically heat the entire floor area within a space, conditioning spaces uniformly regardless of occupancy. This study investigates ...

Springer Science and Business Media Deutschland GmbH2025

Human sitting behavior at office work and its effect on metabolic rate under varying thermal exposure

Ryan Liao, Dolaana Khovalyg

Assessing and optimizing human indoor comfort is challenging as physiological, psychological, and environmental variables influence it. Therefore, it is crucial to understand variability of human physiological parameters and underlying mechanisms. Metaboli ...

2023

Non-intrusive physiological parameters sensing for personalized human thermal comfort prediction

Alexandre Massoud Alahi, Dolaana Khovalyg, Mohamad Rida, Mohamed Ossama Ahmed Abdelfattah

Sensing and projecting an individual’s human thermal comfort in buildings is a complex but crucial task for transitioning toward human-centered indoor climate control. Non-intrusive collection of physiological and personal information from the human body, ...

2023

Review on ventilation rates in the ventilated air-spaces behind common wall assemblies with external cladding

Dolaana Khovalyg, Mohammad Rahiminejad

For many decades, ventilated cavities in wall assemblies of buildings have been essential for creating moisture resilient constructions by allowing airflow within the air gap to promote drying. In addition to that, the airflow in the cavity can enhance the ...

2021

Customized Neural Network training to predict the highly imbalanced data of domestic hot water usage

Dolaana Khovalyg, Amirreza Heidari

Despite space heating and cooling, the energy use for hot water production has not changed significantly over time and accounts for a big share in modern, well-insulated buildings. The main challenge of hot water generation lies in the highly stochastic na ...

CLIMA 2022 conference2022

Resolving indoor shortwave and longwave human body irradiance variations for mean radiant temperature and local thermal comfort

Dolaana Khovalyg, Arnab Chatterjee, Mohamad Rida

A spatially and directionally resolved longwave and shortwave radiant heat transfer model is presented via a series of experiments in a thermal lab to input surface temperatures and geometries, as well as skin temperature readings from a human subject, in ...

2023

A multi-domain data collection strategy for capturing relationships between occupant behaviour, comfort, indoor environment, and energy use in office

Marilyne Andersen, Dolaana Khovalyg, Dusan Licina, Caroline Karmann, Verena Marie Barthelmes

A significant corpus of research has shown that occupant behaviour is a key factor of uncertainty when predicting building energy use. Building occupants affect energy use directly and indirectly by regulating their indoor environment according to their co ...

2020

Dynamic personalized human body energy expenditure: Prediction using time series forecasting LSTM models

Dolaana Khovalyg, Arnab Chatterjee

Dynamic human energy expenditure (EE) consists of energy costs for resting metabolism, food digestion, physical activity, and thermoregulation. Currently, multiple models predict EE mainly concerning physical activity, thus, discarding other factors contri ...

ELSEVIER SCI LTD2023

Local heating and cooling effectiveness - an evaluation method based on calculated local and overall thermal state

Dolaana Khovalyg, Mohamad Rida

The application of Personal Comfort Systems (PCS) in the buildings demonstrated their potential to improve thermal comfort and reduce energy use by the space conditioning HVAC systems. With its personal controllability (on-demand) PCS is a practical soluti ...

TU Delft2022

Dynamics of metabolic rate in male individuals due to the meal and regular office activities

Dolaana Khovalyg

Metabolic rate is one of the main parameters affecting the thermal balance of the human body and perception of thermal comfort. Typically, we consider a constant value for a specific type of activity (sitting quiet, standing, etc.) despite the time of the ...

TU Delft2022

Combined desiccant-ejector cooling system assisted by Organic Rankine Cycle for zero-power cooling and dehumidification

Dolaana Khovalyg, Amirreza Heidari

This study presents a novel set-up for desiccant-based cooling and dehumidification systems. In this cycle, a solid desiccant and conventional combined cooling and power (CCP) systems, based on the ejector refrigeration cycle (ERC) and the organic Rankine ...

IOP Publishing2019

Impact of Standard versus Tracked-based User Behavior into Energy Simulations of Open-Space Offices

Dolaana Khovalyg, Verena Marie Barthelmes, Arnab Chatterjee

This simulation-based study aimed to contribute to gaining knowledge on how much the deviation between occupant-related input by the national standard and by insitu measurements might impact predictions of heating/cooling needs in offices. Analysis was per ...

2023

Water-energy nexus approach to compare performance of evaporative and vapor-compression cooling systems

Dolaana Khovalyg, Amirreza Heidari

Evaporative cooling systems consume high water, but low electricity for their operation. On the other hand, vapor compression systems consume no water, but high electricity. Water and energy systems are interconnected at different levels. Therefore, water ...

2019

Impact and comparison of standard-based, stochastic, and tracked user behaviour in open space offices: A Swiss case study

Florian Paul Jérémy Guillaumat, Dolaana Khovalyg, Verena Marie Barthelmes

The role of occupants and their interactions with the building envelope and systems represent a key factor of uncertainty when predicting building energy use with simulation tools. The aim of this simulation-based study is to contribute to gaining further ...

Int Building Performance Simulation Assoc-Ibpsa2022

Thermal Conditions in Indoor Environments: Exploring the Reasoning behind Standard-Based Recommendations

Dolaana Khovalyg, Sarah Wael Ahmed Crosby

Professionals in the building design and operation fields typically look at standards and guidelines as a reliable source of information and guidance with regard to procedural, contractual, and legal scope and requirements that are relevant to accountabili ...

2023

Which sensor type at which location should offices with south orientated window choose to improve comfort and reduce energy consumption?

Dolaana Khovalyg

The common placement of thermostats in offices might not reflect the actual thermal environment around occupants and influence the energy use. In this research, it is questioned which type of thermostat at which location better represents the conditions in ...

IOP Publishing2019