Dekonstruksi Bahasa Indonesia pada Bahasa SMS

Seiring dengan pesatnya Perubahan dalam teknologi kumunikasi dan informasi, penggunaan media telepon seluler dalam pemanfaatan komunikasi semakin intens. Pada saat yang sama penggunaan layanan pesan singkat (sms) yang disampaikan melalui telepon seluler pun semakin intens. Dalam pada itu, bahasa (Indonesia) yang digunakan dalam sms mengalami dekonstruksi atas struktur-struktur yang sudah mapan. Makalah ini bertujuan untuk membahas bentuk-bentuk dekonstruksi atas bahasa Indonesia melalui sms. Data-data yang terkait dengan makalah ini diambil dari sms yang masuk dalam telepon seluler dengan metode catat. Berdasarkan data-data yang ada, dalam pemakaian bahasa Indonesia kontemporer (melalui sms) terdapat adanya dekonstruksi atas sistem bahasa Indonesia dalam berbagai manifestasinya, mulai dari dekonstruksi atas sistem kebahasaan yang ada maupun dekonstruksi atas cara-cara pemerian bahasa Indonesia

Simulation of the heat recovery use of R744 systems in a supermarket

This paper describes the outcomes a research project that investigate the improvement in the COP of an enhanced booster R744 refrigeration system that provided MT cooling for chilled food cabinets and LT cooling for cold room/frozen food cabinets by recovering the heat rejected and using it more for other building services applications in the supermarket. For instance, the heat reclaimed can be used for heating, HWS or to drive absorption chillers, either in whole or in part. To demonstrate the potential of the heat reclaimed within the supermarket and its impact on the store’s CO2e emissions, a feasibility study has been performed to examine the innovative system compared to of the existing conventional system which will cover the cooling demands of an existing supermarket. In order to achieve this, the data collected by a smart energy monitoring system will be used to examine the working of the novel system when covering the cooling demands of the store. The energy consumption of the novel system will be analyzed according to thermodynamic theory. Using an Excel model, the potential heat reclaimed will be mathematically investigated for best practice applications of heat recovery. The energy saved and CO2e emission reduction achieved in apply the novel system will be determined and analysed

Study of Energy and Cost Savings of Demand Controlled Fresh Air Systems

This paper presents findings from a study on the energy and cost savings of Demand Controlled Fresh (outdoor) air systems for existing office buildings. The study was based on technical analysis of data from an existing 11 storey office building located in London. The study proposed a retro-fit mechanical system and control solution to convert the existing constant volume fresh air system to a demand based system. The four key parts of the proposed system were the occupancy detection device, local ventilation zone branch control, central ventilation plant control and overall controls logic. The building and proposed control solutions were simulated. The results revealed up to 39% annual energy savings for the fresh air plant. This equates to 4% reduction of the overall building annual energy and an overall building annual energy cost saving of around 3%

Review of Intelligent Control Systems for Natural Ventilation as Passive Cooling Strategy for UK Buildings and Similar Climatic Conditions

Natural ventilation is gaining more attention from architects and engineers as an alternative way of cooling and ventilating indoor spaces. Based on building types, it could save between 13 and 40% of the building cooling energy use. However, this needs to be implemented and operated with a well-designed and integrated control system to avoid triggering discomfort for occupants. This paper seeks to review, discuss, and contribute to existing knowledge on the application of control systems and optimisation theories of naturally ventilated buildings to produce the best performance. The study finally presents an outstanding theoretical context and practical implementation for researchers seeking to explore the use of intelligent controls for optimal output in the pursuit to help solve intricate control problems in the building industry and suggests advanced control systems such as fuzzy logic control as an effective control strategy for an integrated control of ventilation, heating and cooling systems

UK Centre for Efficient and Renewable Energy in Buildings (CEREB)- Lessons Learned After 5 Years of Running

The Centre for Efficient and Renewable Energy in Buildings (CEREB) is a unique, teaching, research and demonstration resource for the built environment. It is located at London South Bank University (LSBU) and showcases different renewable and low carbon energy solutions for which performance data is captured for teaching and research. The technologies included are Ground Source Heat Pump (GSHP) for providing heating and cooling to the 8,500 m2 K2 building which is located below CEREB. The solar thermal collectors are used to provide the hot water demand of the K2 building, with back-up boilers to supplement the required heat on cloudy days. The centre itself has additional technologies including solar fibre optic lighting, solar Photovoltaic (PV) panels, solar thermal tubes (evacuated tubes), phase change materials, absorption chiller for cooling, and a weather station, which is crucial for understanding the performance of the various technologies at different times of the year and different weather conditions. This paper consists of two parts; the first part presents a brief description of CEREB and the K2 building including the concept behind the design, sustainability measures and key features followed by a description of the technologies used in the building and in the centre. The second part presents lessons learned from the design, construction and running the building over the last 5 years with results from the solar thermal panels and PV Panels

Assessing the performance gap of two dynamic thermal modelling software tools when comparing with real-time data in relation to thermal loss

Managing thermal loss is a key topic that needs further investigation as it has a direct link to reducing the energy load in buildings. One of these thermal loss management methods can be the use of shading devices. Dynamic thermal models normally used at the early stages of the building design can play an important role in the decision-making process regarding the use of shading devices. This paper presents the results of a real-world study assessing the potential of using a sealed cellular blind as a passive energy conservation method, where the real-world results are compared with the simulated results generated with environmental design solutions limited thermal analysis software (EDSL Tas) and integrated environmental solutions virtual environment (IES VE). During the real-world study, a positive impact of having blinds was seen whereby the window surface temperature increased and office heating energy consumption was lowered. Both software tools were able to predict a similar trend of results for the window surface temperature in with and without blind scenarios whereas for energy consumption although in the presence of a blind a consistent correlation is seen between measured and calculated values but not without a blind. This can be attributed to the inability of the software tools in demonstrating the effect of in filtration in the absence of a blind or shading device i.e., a clear window scenario.Practical Application: The performance gap analysis regarding thermal loss between dynamic thermal models and real-world settings within buildings can enhance the predictability of the building energy software tools used by designers. Early design inputs within buildings can prevent costly building re-work to improve the building’s energy performance. This can also improve the understanding within the building industry of the importance of reducing thermal loss through the use of shading devices and ensuring the software tools used to model these devices are as close to real-world settings as possible

Comparison of Real-world Data with Simulated Results to Enhance Building Thermal Retention when using Shading Devices

Managing thermal loss is a key topic that needs further investigation as it has a direct link to reducing the energy load in buildings. One of these thermal loss management methods can be the use of shading devices. Dynamic thermal models normally used at the early stages of the building design can play an important role in the decisionmaking process regarding the use of shading devices. This paper presents the results of a real-world study assessing the potential of using a sealed cellular blind as a passive energy conservation method, where the real-world results are compared with the simulated results generated with EDSL Tas. During the real-world study, a positive impact of having blinds was seen whereby the window surface temperature increased and office heating energy consumption was lowered. EDSL Tas was able to predict a similar trend of results for the window surface temperature but not for the energy consumption. This was mainly due to the inability of the software in demonstrating the effect of infiltration of the blind

Performance Enhancement of Urban Ground Source Heat Pumps through Interactions with Underground Railway Tunnels

Ground source heat pumps (GSHPs) can provide an efficient way of heating and cooling buildings due to their high operating efficiencies. The implementation of these systems in urban environments could have further benefits. In such locations the ground source heat is potentially more accessible via alternative sources such as through underground railways (URs). This paper investigates to what extent the heat in the soil surrounding an UR tunnel could enhance the operation of urban GSHPs installations. To address this, a numerical investigation was set out which included a parametric study considering a number of geometrical options of the systems. The results showed that heat extraction rates of GSHPs installed near UR tunnels can be significantly improved by up to ~ 43%