Assessment of Current Energy Consumption in Residential Buildings in Jeddah, Saudi Arabia

In the Kingdom of Saudi Arabia (KSA), residential buildings' energy consumption accounts for almost 50% of the building stock electricity consumption. The KSA's economy relies heavily on fossil fuel sources, namely oil reservoirs, whose depletion will negatively affect the future development of the country. The total electricity consumption is...

Factors causing peak energy consumption of reefers at container terminals

Reefers are refrigerated containers commonly used for transporting perishable goods such as meat, fish, vegetables and fruit. Nowadays, reefers are responsible for 40% of the total energy consumption of container terminals, when connected to the electricity grid on shore. Every time when a large number of reefers is plugged-in after arrival,...

Defining water-related energy for global comparison, clearer communication, and sharper policy

The need for energy in water provision and use is obvious, however the drivers are often complex, difficult to assess, and often inconsistently presented. Here we build a clearer definition and conceptual framework of “water-related energy”. We apply this framework to harmonise data and results across disparate studies so that regional...

Developing home occupant archetypes: First results of mixed-methods study to understand occupant comfort behaviours and energy use in homes

To better understand home energy consumption, it is important to study the behaviours of occupants in their homes, especially in relation to their comfort needs. A mixed methods study comprising of a questionnaire, interviews, indoor environmental parameters monitoring, and energy consumption readings was performed to group home occupants...

On the Impact of Code Smells on the Energy Consumption of Mobile Applications

Context. The demand for green software design is steadily growing higher especially in the context of mobile devices, where the computation is often limited by battery life. Previous studies found how wrong programming solutions have a strong impact on the energy consumption. Objective. Despite the efforts spent so far, only a little knowledge...

Automatic Processing of User-Generated Content for the Description of Energy-Consuming Activities at Individual and Group Level

Understanding and improving the energy consumption behavior of individuals is considered a powerful approach to improve energy conservation and stimulate energy efficiency. To motivate people to change their energy consumption behavior, we need to have a thorough understanding of which energy-consuming activities they perform and how these...

Opportunities for peak shaving the energy demand of ship-to-shore quay cranes at container terminals

This paper presents the results of both a qualitative and a quantitative study on<br/>the possibilities for peak shaving the energy demand of ship-to-shore (STS) cranes at container terminals. The objective is to present an energy consumption model that visualizes the energy demand of STS cranes and to show the possibilities for reducing the...

In-situ real time measurements of thermal comfort and comparison with the adaptive comfort theory in Dutch residential dwellings

Indoor thermal comfort is generally assessed using the PMV or the adaptive model. This research presents the results obtained by in-situ real time measurements of thermal comfort and thermal comfort perception in 17 residential dwellings in the Netherlands. The study demonstrates the new possibilities offered by relatively cheap, sensor-rich...

The impact of hybrid engines on fuel consumption and emissions of heavy-duty trucks

Overland transport of goods mainly goes by road. Road freight transport, trucking in particular, has a large share in the energy consumption, CO2-emissions and air pollution by human activities. This will become an even bigger issue with the expected massive growth of road freight transport.<br/>Climate change mitigation asks for a major...

Keep It Cool: Reducing Energy Peaks of Reefers at Terminals

The increase in population, high standards of living and rapid urbanization has led to an increasing demand for food across the globe. The global trade has made it possible to meet this demand by enabling transport of different food products from one part of the world to another. In this trade, refrigerated containers (reefers) play an important...

Towards a method for benchmarking energy consumption at terminals: in search of performance improvement in yard lighting

The growth in container volumes over the last decades means an increase in container handling at terminals around the world. Notwithstanding the economic benefits, container handling causes additional pressure on the surrounding infrastructure and the environment. This is happening precisely at a time when environmental issues, in particular CO2...

The Effect of Geometry Parameters on Energy and Thermal Performance of School Buildings in Cold Climates of China

This paper discusses the role of geometry parameters including building shape, window to wall ratio, room depth, and orientation on the energy use and thermal comfort of school buildings in cold climates of China. The annual total energy demand and summer thermal discomfort time were compared through computer simulations with DesignBuilder....

A review of comfort, health, and energy use: Understanding daily energy use and wellbeing for the development of a new approach to study comfort

There is a need for reducing dwellings’ energy consumption while maintaining a comfortable and healthy indoor environment. This review was performed to provide a steppingstone for identifying new methods for studying everyday home energy use and comfort. First, an overview of comfort is given as seen from different disciplines, depicting the...

On the Energy Benefit of Compute-and-forward for Multiple Unicasts

Compute-and-forward (CF) is a technique which exploits broadcast and superposition in wireless networks. In this paper, the CF energy benefit is studied for networks with unicast sessions and modeled by connected graphs. This benefit is defined as the ratio of the minimum energy consumption by traditional routing techniques, not using broadcast...

Occupant behaviour in energy efficient dwellings: Evidence of a rebound effect

The energy required for space heating has been significantly reduced in recent decades by making use of insulation and more efficient heating and ventilation systems. Even so, wide variations in energy consumption are still observed between similar dwellings and between actual and predicted levels. It is thought that these variations stem from...