Mosques serve as pivotal hubs for Muslim worship, accommodating intermittent prayer sessions occurring five times daily. Comprehending the environmental dynamics within air-conditioned structures experiencing varying occupancy is imperative informed design decisions. This study aims to analyse a Malaysian mosque's thermal conditions, including comfort temperatures and compliance with standards. It also seeks assess indoor air quality by measuring CO2 concentrations estimating ventilation...

Proses pengeringan daun kelor (Moringa Oleifera) diperlukan untuk mengurangi kandungan air sehingga dapat mencegah kerusakan dan memperpanjang umur simpan kelor. Pada penelitian ini telah dilakukan menggunakan matahari pengering tipe rak. Pengeringan surya efek rumah kaca, sedangkan rak pemanas gas listrik. Tujuan dari adalah melakukan perbandingan beberapa tersebut mengetahui model matematis yang paling tepat menggambarkan kinetika pengeringannya. Model digunakan Newton (Lewis), Handerson...

Foaming properties, microstructure, and mathematical model of foam mat drying pasta sauce based on tomato | Nok Afifah, Achmat Sarifudin, Rima Kumalasari, Novita Indrianti, Lia Ratnawati, Mirwan Ardiansyah Karim, Umi Hanifah, Aidil Haryanto, Yusnan Hasni Siregar, Andi Taufan Agricultural Journals

Adsorption chiller is one of the solution related to environmental issues caused by conventional cooling system. This paper presents an experimental performance adsorption with fin and tube heat exchanger in Mechanical Engineering, Universitas Indonesia. The design configuration composed two sorption chambers, each has compact exchangers as adsorber, condenser, evaporator. tested under typical condition for hot water inlet/cooling inlet/chilled outlet temperatures are 64.4/31/8.9°C,...

A model of gas stove for traditional tofu industry was designed and tested. one the focuses cleaner production is energy efficiency, so to have good thermal efficiency low consumption. The constructed with two kettles where first kettle used cook soybean porridge from 5-8 kg other warm water. test consist water boiling cooking test. Water Boiling Test (WBT) assessed performance by It takes 29,0 minutes boil 20 lites in cold start condition 18,7 hot condition, moreover average specific fuel...

Penelitian ini bertujuan untuk mengetahui perbandingan pengaruh antara penggunaan gaya mengajar latihan dan komando dengan konsep diri terhadap keterampilan smash bulutangkis pada siswa kelas X SMA ADI LUHUR Jakarta Timur. Hasil penelitian menunjukkan pertama, terdapat perbedaan hasil secara keseluruhan didapat Fh = 53.34 Ft 4,00, Dengan demikian Fo > Ft, sehingga Ho ditolak, dapat disimpulkan bahwa keseluruhan, yang nyata komando  smash. Kedua, bagi kelompok tinggi diperoleh Qh 5,25...

Evaluation of the double can seamer machine has been carried out by conducting a seaming trial using commercial aluminum cans with volume 330 mL and head diameter 52 mm containing ciplukan (Physalis angulata L.) juice drinks. The used in this study was semi-automatic tin seamer, type speed 5 sec per can. number samples 100 seamed cans. Measurements were at four points, viz., quarter circle Seam quality evaluated measuring external internal parameters. External parameters consist seam...

Understanding the environmental dynamics of air-conditioned mosques hosting five daily prayers with fluctuating occupancy is essential for informed design decisions.This study investigates a Malaysian mosque's thermal environment and worshippers' perceptions, including comfort temperatures.Field measurements spanned week included various prayer times.A questionnaire-based adaptive was conducted after Friday midday when worshippers fully occupied main hall.The mean indoor air temperature...

Mosques are used five times a day according to the prayer schedule, which follows sun's position. Indoor thermal conditions in air-conditioned mosques maintained with cooling time pattern that times. Therefore, an effective air conditioning operating strategy is needed for energy efficiency. This study aims investigate effect of intermittent operation strategies on usage mosque. It involves reducing period before and swapping active periods from pre-prayer calls post-prayer base case. Field...

This research was related to the development of technology for making non-wheat noodles. The process noodles requires special treatment because their different characteristics from wheat One solution that can be used is extrusion technology. Therefore, a single-screw extruder with small capacity developed which expected meet needs SMEs producing supposed capable supporting an industry based on utilization local raw materials, hence enhancing economic growth and sustainable development....

Abstract Experimental investigation of a rotary desiccant wheel is presented in this study. The without honeycomb matrix structure tested where silica gel used as the material. dehumidification experiment shows humidity ratio decreased from 0.0205 kg/kg to 0.0182 kg/kg. Due it has potential be drying machine, an initial was also carried out see performance machine. process machine can reduce moisture content noodle product 33.86% 9.95% 17 hours. Results show that thermal, regeneration, and...

Vaccine is one of the biggest problem that happen in Indonesia. Almost 75% vaccine frozen on shipment process from Province to healthcare district. usually transferred using a box whose temperature has be maintained at 2-8°C. The newest technology uses adsorption cooling and solar energy keep cold chain. This separated into 3 modules which are module (contain zeolite water), box, heater. as process, where makes pressure drop causes decrease temperature. will used source box. After reach...

Penelitian ini bertujuan untuk mengetahui perbandingan pengaruh antara penggunaan gaya mengajar latihan dan komando dengan konsep diri terhadap keterampilan smash bulutangkis pada siswa kelas X SMA ADI LUHUR Jakarta Timur. Hasil penelitian menunjukkan pertama, terdapat perbedaan hasil secara keseluruhan didapat Fh = 53.34 Ft 4,00, Dengan demikian Fo > Ft, sehingga Ho ditolak, dapat disimpulkan bahwa keseluruhan, yang nyata komando  smash. Kedua, bagi kelompok tinggi diperoleh Qh 5,25...

A new design of silica gel-water adsorption chiller is proposed. The configuration composed two sorption chambers with compact fin tube heat exchangers as adsorber, condenser, and evaporator. Heat mass recovery were adopted in order to increase the cooling capacity. Numerical modelling calculation used show performance different adsorber diameter. Under typical condition for hot water inlet/cooling inlet/chilled outlet temperatures are 90/30/7°C, respectively, simulation results showed best...

This paper discusses design and testing of adsorption refrigeration system with two adsorbers. Main components consisted adsorber 6.6 kg solidified activated carbon inside, expansion valve, evaporator, condenser, reservoir. All that were connected stainless steel pipes. The test performed for 75 minutes using 250 ml methanol pro-analysis 99.9% as a refrigerant in the water temperature is 250C which pumped through copper pipes to cool adsorbents. air pressure during vacuum. average difference...

Designing machines without involving the human factor can cause users discomfort, fatigue, and health problems. Ergonomic criteria when designing increase user effectiveness. PT. Noang Prima Utama uses an extruder to produce pasta under “LocaPasta” brand. Complaints of pain in neck back for 1-3 days due standing position, bending down, arms reaching forward a long-time during production. The research objective was evaluate design using anthropometric method. Anthropometric data were tested...

Adsorption cooling is a process that uses drop-in pressure caused by the adsorption of adsorbate adsorbent. creates drop which can bring down temperature to intended condition. This approach be used in vaccine transportation as vaccines need stored at low temperatures (2°C 8°C for preserving vaccines). The decrease obtained water zeolites and also produce main chamber. will until reaching saturation Heat needed keep system continuous it starts desorption process. From simulation using...

Solar thermal cooling technology utilization such as adsorption system has attracted researchers an alternative to conventional vapor compression system. The can utilize low-grade heat its power source. This paper presents a numerical simulation of new conceptual design self-cooling mobile container predict performance. was mathematically modeled calculate and simulate power, COP, SCP, the lowest temperature that could be obtained. consists four main components namely chamber, valve system,...

This paper investigates the effect of metal additive thorough an adsorption bed.The bed is composed zeolite granules on inside diameter a cylinder.A volume-based two-phase effective thermal conductivity formula was used to predict two components mixture.Energy balance also discussed ensure time needed spread heat all body.The results show that aluminium enhances performance better than other additives.The 15% wt improves 286% compare conductivity, followed by copper, brass, and steel 217%,...

Abstract Drying agricultural products with solar power to maintain quality and extend the shelf life of has been done by many farmers because it is easy cheap do. However, availability heat may be different every day greatly influenced weather conditions causing drying times for product reach desired moisture content. This research aimed develop a real-time water content measurement system during process. Measurement was carried out using weight approach loadcell sensor. Data processing...