Of the open type piggery built in Kisarazu City, Chiba Pref., investigations carried out in summer and winter, authors studied the heat transfer on the roof where the resistance of total heat transmission differed.
1) Difference of the average temperature of piggery in summer and winter was about 20°C and that of the average relative humidity about 10%. The temperature and relative humidity inside piggery varied relating with those outside piggery.
2) The heat flow on the roof changed from heat gain to loss or from heat loss to gain at the time when the temperature varied so much. As resistance of total heat transmission of the roof become greater, both heat gain and loss tended to decrease.
3) During the daytime in summer, inside surface temperature of the west side roof of piggery was more affected than that of the east side roof by solar radiation.
4) As resistance of total heat transmission of roof increased as much as 1m²·h·°C/kcal, heat transfer by radiation from inside roof surface decreased significantly. Over 1m²·h·°C/kcal, heat transfer by radiation varied hardly.
5) As to the inside temperature below the roof, the temperature of small resistance of total heat transmission was considered to bo more affected than the roof of great resistance of total heat transmission dy heat from inside roof.
6) On the roof structure of piggery, authors have obtained the following views from our investigations.
(1) For the roof of piggery around Kisarazu city, it is recommended from the point of view of thermal environment to have threefold structure consisting of corrugated metal with 50mm air space, 20mm insulation and 3mm plywood.
(2) The above mentioned threefold structure with 10mm insulation instead of 20mm may be affected by solar radiation, especially in the west side of roof of piggery.
(3) Since the resistance of total heat transmission of the threefold structure described in (1) was 0.96, the roof corresponding with the value should be constructed for the future. Roof with slates, for example, is much used in the Kanto district. As 3mm slate has 0.0036 of resistance of total heat transmission, the roof need to have the threefold structure consisting of 3mm slate, 26.5mm insulation, and 3mm plywood in order to keep the thermal environment of inside roof surface effectively.

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In order to find whether a vibratory air-slide mechanism is applicable as a so called process conveyor, the authors constructed the small sized apparatus.
The grain particles on the trough were pseudo-fluidized and transported by means of aeration and vibration.
Materials tested were paddy and brown rice, and flow properties obtained were as follows:
(1) The grain particles of paddy and brown rice were made pseudo-fluidized and transported on the trough at an apparent air velocity u_a in less than a half the minimum fluidization velocity u_mf under the conditions of vibration intensity factor Kv=1.5-3.0 and trough angle θ'=0°-6°.
(2) Grain rate G's (t/h) gradually increased as an increase of Kv or θ', and approached a constant value under the condition of Kv≥2.5 and θ'≥4°.
(3) Assumed only a gravity get the fluidized bed slipped down on the trough, the velocity at any position on the trough would be shown as
U_s=√2gl[sinθ-μ_dis{cosθ+(h/b)secθ}]
The experimental data calculated by the above equation shows the following relation,
μ_dis=kθ
where k is constant and 0.799 for paddy and 0.870 for brown rice.

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In order to try to make the design and the control of thermal radiant environment within livestock barns most suitable, effects of different factors on radiant environment need to be clarified. The authors made the computer program for calculating thermal radiant heat in a gable roofed open-type barn and then carried out an analysis of factorial effects. These procedures are described in this paper and a summary of those is shown below.
The main parts involved in the present program were weather condition, radiant-interchange configuration factors, ground surface temperatures, outside and inside roof surface temperatures, and downward radiant heat in the barn (Fig. 2).
An analysis of factorial effects was conducted by using a response analysis method in “design of experiments” techniques. The factors in the present analysis were (1) the resistance of total heat transmission for the roof, (2) the absorptivity of the outside roof surface for short-wave radiation, (3) the emissivity of the outside roof surface for long-wave radiation, (4) the absorptivity of the inside roof surface, (5) the emissivity of the inside roof surface, (6) the kinds of ground surfaces, (7) the length of the barn, (8) the width of the barn, (9) the height of the eaves, (10) the orientation of the barn, and (11) the inclination of the roof. The values at three levels were given to each factor (Table 5) and numerical simulations for the radiant heat were conducted with the combinations obtained by the table of orthogonal arrays L₈₁ (3⁴⁰). An analysis of variance (ANOVA) for the radiant heat obtained by the simulation will make it possible to evaluate the significance and contribution ratios of factorial effects. And a equation that consists of arithmetic sums of several significant factorial-effects will be able to predict the radiant heat in different barns (eq. (39)).
The results of ANOVA will be discussed in detail in following papers.

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According to procedures that were described in the previous paper, the authors carried out an analysis of factorial effects on the shortwave thermal radiant environment within gable roofed open-type barns. The results from the simulation which were subjected to analysis of variance were the diurnal average and the maximum, between 9:00 and 17:00, of downward short-wave radiant heat on an infinitesimal horizontal element located in the center of the barn one meter above the ground. The summary of the results is shown below.
1) Factors that had significant effects on the diurnal average were (1) the width, (2) the height of the eaves, (3) the orientation of the barn, (4) the inclination of the roof, (5) the absorptivity of the inside roof surface for short-wave radiation, (6) the length of the barn, and (7) the kinds of ground surfaces, in order of the magnitude of contribution ratios (Table 2). Sixty-seven point six percent of the total variation for the diurnal average was caused by above factors, with 53.7 percent caused by the width of the barn and height of the eaves.
2) Significant factors for the maximum were (1) the height of the eaves, (2) the width, (3) the length of the barn, (4) the inclination of the roof, (5) the orientation of the barn, and (6) the kinds of ground surfaces, in order of the magnitude of contribution ratios (Table 4). Sixty-seven point four percent of the total variation for the maximum was due to these factors, with 45.9 percent due to the width of the barn and height of the eaves.
3) The equations that are best able to predict the diurnal average (eq. (1)) and the maximum (eq. (2)) were obtained from the present analysis. The predicted values of differnt gable roofed open-type barns are calculated by the sums of the estimated values of the effects of several factors as indicated in Table 3 and 5.
4) The levels of the factors that make the short-wave radiant environment most suitable are as follows:
(a) The height of the eaves is less than 1.5 meters. If so, the width of the barn scarcely affects the short-wave radiant heat. If the height of the eaves is 3.0 and 4.5 meters, then the width of the barn should be more than 10.0 and 17.0 meters, respectively.
(b) The orientation of the barn is east-west.
(c) The inclination angle of the roof is less than 20.0 degrees.
(d) The absorptivity of the inside roof surface for short-wave radiation is above 0.9.
(e) The length of the barn is over 45.0 meters.
(f) The ground surface is a bare ground.
In these conditions the diurnal average and the maximum were predicted to be less than 15.2 and 179kcal/m²·h respectively, at a confidence level of 95%.

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The counterplans of the country elevator to the case of increase of the received paddy in the future were considered. The country elevator at Omi-Hachiman city in Shiga pref. (3000 ton of capacity) was chosen for the research. These counterplans can also be applied when the new facility is designed in order to restrain the scale as small as possible. The base of these counterplans is the method of half drying storage mentioned in the previous report. The enlargement of temporary storage tanks and grain silos is necessary with only the application of method of half drying storage because much temporary storage generates. And so the introduction of the pre-drying of high moisture paddy at receiving time and the finishing drying by the head dryers was considered. As the result, it became clear that when the received amount is below 4500 ton, the temporary storage paddy does not generate owing to the pre-drying, and the amount of half drying storage paddy in the grain silos is restrained in low level owing to the finishing drying. As for this facility, when the pre-dryer is introduced and the interstice silos are used effectively, the received amount less than 4500 ton is possible to be dealt without the extension of silo. Though in case of this method, it is necessary to classify the paddy precisely according to the moisture content, this problem has been able to be settled by the development of accurate automatic moisture meter. In case that this method is applied in some region, it is possible to calculate the ability of the facility easily with the receiving pattern of paddy and the using conditions of the head dryers.

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In order to analyze Japanese trellis statically, a model of the trellis was made and experimented.
Some conclusions are as follows.
1) Center wires, side poles and their bracing wires are influenced by the loads more than edge wires, corner poles and their bracing wires.
2) Not only compression but bending moment is loaded poles and the smaller the angle between pole and bracing wire, bending moment becomes greater. When the poles made of reinforced concrete are selected for Japanese trellis, the bending moment has to be calculated sufficiently.
3) Close agreement between experimental and theoretical values was obtained except side poles and their bracing wires. The experimental proportions of each wire's tention and netting wire's tention of the model and the practical proportions of the actual trellis resembled each other. So experiment of using the model is available for static analysis of Japanese trellis.
4) The effect of initial tention on the tention at weight hanging is very small, so that initial tention of center wire is enough to strain to such degree as the wire sag little.
5) Considering effective utilization of orchard and favorable condition of trellis intensity, the optimum angles of bracing wire, side pole inclination and corner pole inclination are about 60°, 60° and 45°, respectively.

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