In an industrial cleanroom, significant energy savings were realized by implementing two types of demand controlled filtration (DCF) strategies, one based on particle counts and one on occupancy. With each strategy the speed of the recirculation fan filter units was reduced to save energy. When the control was based on particle counts, the energy use was 60% of the baseline configuration of con...

Abstract: We present a neural network approach for tomographic imaging problem using interpolation methods and fan-beam projections. This approach uses a partially connected neural network especially assembled for solving tomographic reconstruction with no need of training. We extended the calculations to perform reconstruction with interpolation and to allow tomography of fan-beam geometry. Th...

Non-Adjacent Form (NAF) is a canonical form of signed binary representation of integers. We present some explicit formulae of NAF and its left-to-right analogue (FAN) for randomly chosen n-bit integers. Interestingly, we prove that the zero-run length appeared in FAN is asymptotically 16/7, which is longer than that of the standard NAF. We also apply the proposed formulae to the speed estimatio...

In this thesis, performed at Volvo Cars, some concepts of modelling cooling fans with Computational Fluid Dynamics are evaluated by comparison with experimental data. Focus is set on the method Multiple Reference Frame (MRF) but the Body Force and Mixing Plane Models are also investigated. All measurements were carried out in Volvo Cars component test rig where pressure jump and air flow rate t...

Four experiments examined the relationship among massive practice, speed-up of memory retrieval, and the reduction of long-term memory interference. All experiments employed a multiday fact recognition procedure. Interference was varied by a fan manipulation: Concepts could appear in more than one fact (fan) or only one fact (no fan). We found that fact retrieval speeds up as a power function o...

This paper aims in providing a user friendly, reliable and automated water pumping system. The paper aims in designing a system which is capable of detecting moisture level in the soil and capable of taking the decision of switching ON/OFF water pump. The system also uses temperature sensor to detect the temperature and automatically the fan speed can be controlled like coolants. In this paper ...

This paper presents the “Automatic control of home appliances include Room Light and Fan Controller Using Microcontroller AT89C51” is a reliable circuit that takes over the task of controlling the room fan and room lights as well as counting number of persons / visitors in the room very accurately .When somebody enters into the room then the counter is incremented by one and the light in the ro...

Dynamic logic circuits provide more compact designs with faster switching speeds and low power consumption compared with the other CMOS design styles. This paper proposes a wide fan-in circuit with increased switching speed and noise immunity. Speed is achieved by quickly removing the charge on the dynamic node during evaluation phase, compared to the other circuits. The design also offers very...

We present a computational study, validated by mean-flow experiments, of a dual-stream nozzle simulating the exit conditions of a supersonic turbofan engine with noise-suppressing fan flow deflectors. The study is conducted for eight nozzle configurations and two operating conditions: a cold condition at which mean velocity surveys were conducted and against which the computational code was val...