<abstract xmlns="http://www.w3.org/1999/xhtml">

This research is focused on assessing daylight performance in different floors based on the building proportion. Previous studies showed that atrium with the same Well Index (proportion) will receive the same daylight. This study aims to examine the relation between daylight in different floors of a building, using Well Index.
Using DIVA for Rhino and DesignBuilder as the optimized daylight and energy simulation tools, this paper employs Daylight Autonomy (DA) and thermal performance as measured metrics.
The research findings have demonstrated that Well Index can be a valid indicator to characterize proportion for assessing daylight at individual floors in buildings. This methodology improves the existing research method by proving that spaces with the same Well Index will have very close dynamic daylight metrics under the same condition, assumptions and material properties.
</abstract>

Daylight Prediction In Individual Floors Using Well Index

<abstract xmlns="http://www.w3.org/1999/xhtml">

The utilization of pozzolanic materials like metakaolin (MK) in cement mortar and concrete is growing in construction industry all around the world to reduce the CO2 release into the atmosphere and reduce energy consumption. This study instigates the performance of concrete containing locally developed metakaolin in terms of workability, unit weight, compressive strength, ultrasonic pulse velocity and drying shrinkage of concrete. The Portland cement (PC) is replaced by inclusion of developed local metakaolin (calcined Soorh at 800°C for 2 hours duration) with dosages range; 5% to 25% with increment of 5% (by weight of cement). The investigation revealed that concrete made with 15% replacement of ordinary Portland cement (OPC) with locally developed metakaolin (MK) has significant influance on workability, compressive strength, ultrasonic pulse velocity measurements and drying shrinkage of concrete as compared to OPC concrete.
</abstract>

Effect Of Metakaolin Developed From Local Natural Material Soorh On Workability, Compressive Strength, Ultrasonic Pulse Velocity And Drying Shrinkage Of Concrete

<abstract xmlns="http://www.w3.org/1999/xhtml">

The Polish National Centre for Research and Development has been coordinating the implementation of a strategic research project “Integrated System for Reducing Energy Consumption in the Maintenance of Buildings”. The main goal of the project is to support Poland’s efforts to reduce energy consumption in buildings, which is a strategic goal of the European Union. Within the scope of the aforementioned project, Task 4, “Development of thermal diagnostics of buildings”, was realized. Silesian University of Technology in Gliwice was a leader of the scientific-industrial consortium implementing the task. The main objectives of Task 4 and achieved relevant results are presented in the paper. A new method for the rapid on-site thermal diagnosis of a building envelope and systems of heating, ventilation, air conditioning and domestic hot water preparation and the diagnosis of indoor environment quality, as well as a method for drawing up energy performance certificates based on the measurements were developed.
</abstract>

Comprehensive On Site Thermal Diagnostics Of Buildings – Polish Practical Experience

<abstract xmlns="http://www.w3.org/1999/xhtml">

The paper analyzes the possibility of using the energy signature method based on the linear regression to determine the seasonal energy demand for cooling and ventilation in the office building. The “extended” energy signature method (<italic>H-m</italic> method) was described and applied. In accordance with Standard (EN 15603) the estimation of energy consumption for cooling can be performed for a period shorter than the entire season, but data range must be appropriate to obtain the correct accuracy of the results. The presented analysis concerns the uncertainty of estimation the seasonal demand for cooling and ventilation of the building based on monthly and 14-day data. The objective was to choose the shortest possible time period in order to obtain proper accuracy. It has been shown that the <italic>H-m</italic> method cannot be used to estimate cooling demand based on short-term (monthly or 14-days) data due to unacceptable uncertainty of results.
</abstract>

Estimation Of The Seasonal Demand For Cooling Based On The Short-Term Data

<abstract xmlns="http://www.w3.org/1999/xhtml">

The methodology for inspecting the ventilation system and on-site measurements for office buildings has been proposed under the project “Development of thermal diagnostics of buildings”. The inspections of the ventilation system in two office buildings were conducted. The design documentations were compared with the existing state of the installations. The measurements of the air flow volume, of the temperature of ventilation air and of the volume flow of the heating medium and its temperature were performed. The measurements allowed to determine the power of the heater referring to the heating medium and to the air. On the basis of the inspection and measurements performed, the technical condition of the ventilation system was determined and its utilization in each of the buildings.
</abstract>

On-Site Diagnostics Of The Mechanical Ventilation In Office Buildings

<abstract xmlns="http://www.w3.org/1999/xhtml">

The main goal of the Task 4 “Development of thermal diagnostics of buildings” of Strategic Research Project “Integrated System for Reducing Energy Consumption in the Maintenance of Buildings” was to develop new tools for thermal diagnostics of different types of buildings, including development of the rapid method of a cooling sources diagnostics. The paper presents a method for assessing the cooling sources based on on-site measurements. The cooling capacity of the cooling sources and the electric power consumed by the cooling sources were measured in two air-conditioned office buildings. The measurement results were used to calculate the cooling energy generated during the measurement period and the operational Energy Efficiency Ratio <italic>EERo</italic> of the chillers. Electric energy consumed in the measuring period by the auxiliary equipment of the cooling system, i.e.: coolant pumps and fan coil fans, was estimated. The possibility of significant reduction of the energy consumption for air conditioning in both buildings was indicated.
</abstract>

On-Site Thermal Diagnostics Of Cooling Sources For Air Conditioning Systems In Office Buildings

<abstract xmlns="http://www.w3.org/1999/xhtml">

The requirements for the inspection of heating systems have been introduced in the Energy Performance Act. Thermal diagnostics of the system is an evaluation of the technical conditions of the heating and hot water installations, due to their energy efficiency and reliability of obtaining the required internal temperature in the building and delivery of the right amount of domestic hot water at the proper temperature. Data obtained from the diagnostics are useful for proper energy-efficient operation of the installation, for determining the energy performance of the building and executing the energy audit of the building for thermomodernization purposes. The paper describes the methodology of comprehensive inspection and diagnostics of heating and DHW systems and outlines the scope of basic activities that should be performed. The practical application of such diagnostics in several buildings is also presented.
</abstract>

On-Site Thermal Diagnostics Of Heating And Dhw Installations

AHEAD OF PRINT

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Architecture, Civil Engineering, Environment

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