A new method to measure the absolute — humidity independently of the ambient temperature

1996 ◽  
Vol 33 (1-3) ◽  
pp. 156-160 ◽  
Author(s):  
Mitsuteru Kimura
Keyword(s):  
Ambient Temperature ◽  
Absolute Humidity ◽  
New Method ◽  
The Absolute

scholarly journals Modifications to Accelerate the Iterative Algorithm for the Single Diode Model of PV Model

2020 ◽  
Vol 18 (47) ◽  
pp. 33-43
Author(s):  
Mohammed RASHEED ◽  
Suha SHIHAB
Keyword(s):  
Solar Cell ◽  
Nonlinear Equation ◽  
Ambient Temperature ◽  
Equivalent Circuit ◽  
Iterative Algorithm ◽  
Load Resistance ◽  
New Method ◽  
Initial Value ◽  
The Absolute ◽  
Resistance Equation

This paper discussed the solution of an equivalent circuit of solar cell, where a single diode model is presented. The nonlinear equation of this model has suggested and analyzed an iterative algorithm, which work well for this equation with a suitable initial value for the iterative. The convergence of the proposed method is discussed. It is established that the algorithm has convergence of order six. The proposed algorithm is achieved with a various values of load resistance. Equation by means of equivalent circuit of a solar cell so all the determinations is achieved using Matlab in ambient temperature. The obtained results of this new method are given and the absolute errors is demonstrated.

Modeling and Experimental Studies on Oscillating Inclined-Bed Solar Dryer

2013 ◽  
Vol 135 (3) ◽  
Author(s):  
S. Shanmugam ◽  
P. Kumar ◽  
AR. Veerappan
Keyword(s):  
Thermal Efficiency ◽  
Experimental Studies ◽  
Absolute Humidity ◽  
Average Error ◽  
Sunflower Seeds ◽  
Double Pass ◽  
Solar Dryer ◽  
Agricultural Produce ◽  
The Absolute ◽  
Flat Plate Collector

This paper presents a mathematical model for drying agricultural produce using a solar dryer capable of oscillating its bed while kept at an inclined position with respect to vertical. A model of the solar dryer with double-pass flat plate collector and an oscillating-bed has been fabricated and tested for drying agricultural produce (sunflower seeds). The model can predict the change in the absolute humidity of air across the bed, the temperature of the air, the moisture content, and the dryer thermal efficiency. Sunflower seeds were dried on a physical model of the solar dryer with its bed tilted at different angles and oscillated at different frequencies. The predicted and the experimental results are in good agreement. The average error and standard deviation for the absolute humidity of air across the bed is 1.74 and 1.55%, the exit temperature of air leaving the bed is 1.11and 1.21%, and the dryer thermal efficiency is 0.78 and 1.33%, respectively.

Evaporative water loss in domestic fowls and its partition in relation to ambient temperature

1976 ◽  
Vol 87 (3) ◽  
pp. 527-532 ◽  
Author(s):  
S. A. Richards
Keyword(s):  
Ambient Temperature ◽  
Water Loss ◽  
Absolute Humidity ◽  
Evaporative Water Loss ◽  
Linear Functions ◽  
Whole Body ◽  
Water Vapour Pressure ◽  
Evaporative Water ◽  
Open Flow ◽  
Low Levels

SummaryThe rate of evaporative water loss has been studied in domestic fowls in the ambient temperature range from 0 to 40°C.Results for whole-body evaporation were similar when obtained by the open-flow and direct-weighing methods. At low levels of absolute humidity the rate increased by 0·03 mg/(g.h.°C) from 0 to 22 °C and by 0·17 mg/(g.h.°C) from 23 to 40 °C. Wholebody evaporation decreased with rising ambient water vapour pressure by 0·7 mg/(g.h.kPa).Cutaneous water loss was greater than respiratory water loss below 21 °C; it accounted for 78% of whole-body evaporation at 0 °C, falling to 25% at 40 °C.The rates of respiratory and whole-body evaporation could both be expressed as linear functions of respiratory frequency.

A new method for the absolute counting of 239Np

1958 ◽  
Vol 7 (4) ◽  
pp. 339-342 ◽  
Author(s):  
F.H. Cripps ◽  
J.W. Weale
Keyword(s):  
New Method ◽  
The Absolute

scholarly journals The behaviour of trypsin towards α-N-methyl-α-N-toluene-p-sulphonyl-l-lysine β-naphthyl ester. A new method for determining the absolute molarity of solutions of trypsin

1968 ◽  
Vol 107 (1) ◽  
pp. 97-102 ◽  
Author(s):  
D. T. Elmore ◽  
J. J. Smyth
Keyword(s):  
Methyl Ester ◽  
Convenient Method ◽  
Substrate Concentration ◽  
Competitive Inhibitor ◽  
New Method ◽  
Spectrophotometric Measurement ◽  
Bovine Thrombin ◽  
The Absolute ◽  
Hydrolysis Of

1. α-N-Methyl-α-N-toluene-p-sulphonyl-l-lysine β-naphthyl ester (MTLNE) was synthesized as its hydrobromide and shown to be slowly hydrolysed by bovine pancreatic trypsin. The acylation step, however, is so much faster than deacylation of the acyl-enzyme that spectrophotometric measurement of the ‘burst’ of β-naphthol provides a convenient method for determining the absolute molarity of trypsin solutions. 2. By using the same stock solution of trypsin, application of this method at pH4·0 and pH7·0 as well as that of Bender et al. (1966) at pH3·7 gave concordant results. 3. Provided that [S]0>[E]0, the size of the ‘burst’ is independent of substrate concentration. 4. In the trypsin-catalysed hydrolysis of α-N-toluene-p-sulphonyl-l-arginine methyl ester, MTLNE functions as a powerful non-competitive inhibitor. 5. There is no detectable reaction between MTLNE and either bovine pancreatic α-chymotrypsin at pH4·0 or bovine thrombin at pH6·0.

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