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Classifying hot water chemistry: Application of MULTIVARIATE STATISTICS - Dataset

These files are the dataset for the following paper "Classifying hot water chemistry: Application of MULTIVARIATE STATISTICS". Authors: Prihadi Sumintadireja1, Dasapta Erwin Irawan1, Yuano Rezky2, Prana Ugiana Gio3, Anggita Agustin1

opencc-by-4.0Dec 2021View details →

Performance investigation of an ejector-assisted transcritical CO2 heat pump with brazed plate tri-partite gas cooler for space heating and hot water production

The carbon dioxide (CO2) heat pump water heater is recognized as a potential technology for the production of domestic hot water (DHW) and space heating (SH). In this paper, the performance of a transcritical CO2 heat pump water heater with a tri-partite gas cooler is discussed using a numerical model. The heat pump operates in three modes: (1) DHW mode, (2) SH mode, and (3) DHW+SH mode, which provides space heating at 35 °C and hot water up to 70 °C. The simulation model is validated with the experimental data. The effects of different parameters on system performance are investigated, and the coefficient of performance (COP) of the system under different operating conditions is evaluated. The results show that higher heat sink outlet temperatures lower the COP and increase SH/DHW-Ratio for the investigated cases. The maximum COP is investigated for various heat loads by continuous high-pressure (HP) modulation, reaching highest values at 50 % to 60 % of maximum heat load. The SH/DHW-Ratio is investigated for the presented simulation cases in DHW+SH mode, reaching 0.68 to 1.06 for different heat loads.

Figs. 6 in PLATYLOMIA OPERCULATA DISTANT, 1913, A CICADA THAT TAKES WATER FROM HOT SPRINGS AND BECOMES VICTIM OF THE PEOPLE (RHYNCHOTA: CICADOMORPHA: CICADIDAE)

Figs. 6 to 9: Platylomia operculata Distant. Close-up of the "cicadas taking the waters". 6, "birds' eye" view of two males which have fallen on the rocky bed of the springs. 7, subfrontal view of one of the males drinking between damp stones. 8, frontal view of a male, its rostrum perpendicularly planted between wet stones; 9 (from VDO), in spite of the postclypeus being crushed by a supposed collision with a rock "during a badly calculated landing" this male drinks, the rostrum is kept on the lateral fringe of the spring near which the cicada alighted.

Fig. 5 in PLATYLOMIA OPERCULATA DISTANT, 1913, A CICADA THAT TAKES WATER FROM HOT SPRINGS AND BECOMES VICTIM OF THE PEOPLE (RHYNCHOTA: CICADOMORPHA: CICADIDAE)

Fig. 5: "Allegro ma non troppo"... Score common to all Platylomia operculata performers (= C.I.A., species Acoustic ID card: a, temporal oscillogram; b, average spectrum; c, spectrogram).

Figs. 3 & 4 in PLATYLOMIA OPERCULATA DISTANT, 1913, A CICADA THAT TAKES WATER FROM HOT SPRINGS AND BECOMES VICTIM OF THE PEOPLE (RHYNCHOTA: CICADOMORPHA: CICADIDAE)

Figs. 3 & 4: Jaesorn N.P. Panoramic views of the "thermal springs", often clouded with very slightly sulphurized vapours.

Figs. 1 & 2 in PLATYLOMIA OPERCULATA DISTANT, 1913, A CICADA THAT TAKES WATER FROM HOT SPRINGS AND BECOMES VICTIM OF THE PEOPLE (RHYNCHOTA: CICADOMORPHA: CICADIDAE)

Figs. 1 & 2: Morphology in dorsal view (1), then in ventral view centred on hypertelic opercula (2).

Figs. 13 & 14 in PLATYLOMIA OPERCULATA DISTANT, 1913, A CICADA THAT TAKES WATER FROM HOT SPRINGS AND BECOMES VICTIM OF THE PEOPLE (RHYNCHOTA: CICADOMORPHA: CICADIDAE)

Figs. 13 & 14: Leptopsaltria sp. (in description) on mud (13, from VDO) and Balinta tenebricosa Distant, on humific sand (14), two species encountered near the same hot springs during the day, and accustomed to drink (see arrow) water more or less charged with mineral salts, but also with different organic molecules. The evidence of this: the yellowish colour of urine which, every 7 to 9 seconds, Leptopsaltria ejected with spectacular micturitions (see arrow). It should be emphasised that the specimens encountered were also males! Photographs & VDO: Michel Boulard & Khuankanok Chueata.

Figs. 11 & 12 in PLATYLOMIA OPERCULATA DISTANT, 1913, A CICADA THAT TAKES WATER FROM HOT SPRINGS AND BECOMES VICTIM OF THE PEOPLE (RHYNCHOTA: CICADOMORPHA: CICADIDAE)

Figs. 11 & 12: On a neighbouring market, sale of fricassée cicadas offered in voluminous dishes. In 11, Kwankanok Chueata (to the left) speaking with the saleswoman; in 12, close-up view of one of the baked cicada dishes.

Fig. 10 in PLATYLOMIA OPERCULATA DISTANT, 1913, A CICADA THAT TAKES WATER FROM HOT SPRINGS AND BECOMES VICTIM OF THE PEOPLE (RHYNCHOTA: CICADOMORPHA: CICADIDAE)

Fig. 10 (from VDO): Estimate of cigalicid bags; in each of them, several hundred, even more than a thousand agonizing males.

Figure 3 in The effectiveness of hot water pressurized spray in field conditions to slow the spread of invasive alien species

Figure 3. (A) Average maximum temperature, (B) Average thermal exposure (area under the curve), of hot water spray applied to Dreissena polymorpha, Dikerogammarus villosus and Crassula helmsii from three distances (10, 20, 30 cm) and for three durations (5, 10, 15 seconds). Error bars show standard error (n = 36).

Figure 2 in The effectiveness of hot water pressurized spray in field conditions to slow the spread of invasive alien species

Figure 2. Average temperature of hot water spray treatment applied to Dreissena polymorpha, Dikerogammarus villosus and Crassula helmsii from three distances (10, 20, 30 cm) and for three durations (5, 10, 15 seconds) and control cold water treatment (from 10 cm for 15 seconds). Grey shading shows standard error of average (n = 36).

Figure 1 in The effectiveness of hot water pressurized spray in field conditions to slow the spread of invasive alien species

Figure 1. Photographs of four invasive alien species utilised in hot water spray effectiveness experiments; a. Dikerogammarus villosus, b. Dreissena polymorpha, c. Crassula helmsii, d. Hydrocotyle ranunculoides. Photographs by Chris Pollock (a, b, c) and Stephanie Bradbeer (d).

Figure 4 in The effectiveness of hot water pressurized spray in field conditions to slow the spread of invasive alien species

Figure 4. (A) Average maximum temperature, (B) Average thermal exposure (area under the curve), of hot water spray applied to Crassula helmsii from two distances (10 and 30 cm) for three durations (30, 60, 90 seconds). Error bars show standard error (n = 12), * show statistical significance and letters show treatments statistically the same to another.

Figure 4 in Effect of hot-water immersion on eggs and larvae of Anastrepha grandis (Macquart, 1846) (Diptera: Tephritidae) "in vitro and on squash (Cucurbita moschata Duchesne, 1786)

Figure 4. Percent reduction of adult emergence of A. grandis when Atlas squashes infested by larvae was subjected to hydrothermal treatment at different temperatures and times of exposure. / Reducción porcentual de la emergencia de adultos de A. grandis cuando las calabazas Atlas infestadas por larvas se sometieron al tratamiento hidrotermal a diferentes temperaturas y tiempos de exposición.

Figure 2 in Effect of hot-water immersion on eggs and larvae of Anastrepha grandis (Macquart, 1846) (Diptera: Tephritidae) "in vitro and on squash (Cucurbita moschata Duchesne, 1786)

Figure 2. Percent reduction of adult emergence of A. grandis when larvae were subjected to hydrothermal treatment in vitro at different temperatures and exposure times. / Reducción porcentual de la emergencia de adultos de A. grandis cuando las larvas se sometieron al tratamiento hidrotermal in vitro a diferentes temperaturas y tiempos de exposición.

Figure 1 in Effect of hot-water immersion on eggs and larvae of Anastrepha grandis (Macquart, 1846) (Diptera: Tephritidae) "in vitro and on squash (Cucurbita moschata Duchesne, 1786)

Figure 1. Mortality (%) of A. grandis eggs in vitro subjected to hydrothermal treatment at different temperatures and times of exposure. / Mortalidad (%) de huevos de A. grandis in vitro sometidos al tratamiento hidrotermal a diferentes temperaturas y tiempos de exposición.

Figure 3 in Effect of hot-water immersion on eggs and larvae of Anastrepha grandis (Macquart, 1846) (Diptera: Tephritidae) "in vitro and on squash (Cucurbita moschata Duchesne, 1786)

Figure 3. Percent reduction of adult emergence of A. grandis when Atlas squashes infested by eggs was subjected to hydrothermal treatment at different temperatures and times of exposure. / Reducción porcentual de la emergencia de adultos de A. grandis cuando las calabazasAtlas infestadas por huevos fueron se sometieron al tratamiento hidrotermal a diferentes temperaturas y tiempos de exposición.