Heat Capacity for the Water + Lithium Chloride + Lithium Nitrate System at Temperatures from 283.15 to 433.15 K

Iyoki, Shigeki; Tanaka, Hirokazu; Kuriyama, Yutaka; Uemura, Tadashi

doi:10.1021/je00016a009

Cited by 5 publications

(4 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The heat capacity of the ethylamine + water + lithium bromide system was measured with a twin isoperibol calorimeter (Tokyo Riko Co., Ltd., Japan, model HTIC-200) devised for high-pressure measurements. The experimental apparatus has been reported in our previous papers (Iyoki and Uemura, 1989;Iyoki et al, 1994). This twin isoperibol calorimeter consisted of two Dewar vessels of the same size in a constanttemperature bath made of an aluminum block.…”

Section: Methodsmentioning

confidence: 99%

Heat Capacities of Ethylamine + Water + Lithium Bromide from 313.15 K to 373.15 K

1998

Self Cite

View full text Add to dashboard Cite

Heat capacities of ethylamine + water + lithium bromide (H 2 O:LiBr ) 2:1 mass) were measured using a twin isoperibol calorimeter devised for high-pressure measurements in the range of temperatures from 313.15 K to 373.15 K and in the range of ethylamine concentrations from 0 to 50.3 mass %. An empirical equation of the heat capacity for this ternary system was obtained as a function of temperature by a least-squares method from experimental data. Maximum and average absolute deviations between the experimental data measured and the calculated values from this empirical equation were 0.3% and 0.1%, respectively.

show abstract

Section: Methodsmentioning

confidence: 99%

Heat Capacities of Ethylamine + Water + Lithium Bromide from 313.15 K to 373.15 K

1998

Self Cite

View full text Add to dashboard Cite

show abstract

“…where p sat is the saturated pressure in mmHg, T is the temperature in K and the coefficients A, B and C are defined below: The specific heat (c p ) of the solution water-lithium choride + lithium nitrate (salt mole ratio 2.8:1) can be calculated using the following equation [27]:…”

Section: Saturated Pressurementioning

confidence: 99%

District Heating of Buildings by Renewable Energy Using Thermochemical Heat Transmission

Critoph

Pacho

2022

Energies

View full text Add to dashboard Cite

The decarbonisation of building heating in urban areas can be achieved by heat pumps connected to district heating networks. These could be ‘third-generation’ (85/75 °C), ‘fourth-generation’ (50/40 or 50/25 °C) or ‘fifth-generation’ (near ambient) water loops. Networks using thermochemical reactions should require smaller pipe diameters than water systems and be more economic. This work investigates thermochemical transmission systems based on liquid–gas absorption intended for application in urban district heating networks where the main heat source might be a MW scale heat pump. Previous studies of absorption for heat transmission have concentrated on long distance (e.g., 50 km) transmission of heat or cold utilizing waste heat from power stations or similar but these are not directly applicable to our application which has not been investigated before. Absorbent-refrigerant pairs are modelled using water, methanol and acetone as absorbates. Thermodynamic properties are obtained from the literature and modelling carried out using thermodynamic analysis very similar to that employed for absorption heat pumps or chillers. The pairs with the best performance (efficiency and power density) both for ambient loop (fifth-generation) and high temperature (fourth-generation) networks use water pairs. The next best pairs use methanol as a refrigerant. Methanol has the advantage of being usable at ambient temperatures below 0 °C. Of the water-based pairs, water–NaOH is good for ambient temperature loops, reducing pipe size by 75%. Specifically, in an ambient loop, heat losses are typically less than 5% and the heat transferred per volume of pumped fluid can be 30 times that of a pumped water network with 10 K temperature change. For high temperature networks the heat losses can reach 30% and the power density is 4 times that of water. The limitation with water–NaOH is the low evaporating temperature when ambient air is the heat source. Other water pairs perform better but use lithium compounds which are prohibitively expensive. For high temperature networks, a few water- and methanol-based pairs may be used, but their performance is lower and may be unattractive.

show abstract

“…And the H20 + LiCl + L1NO3 system was also proposed in order to improve the performance characteristics and to reduce the corrosion caused by the basic H20 + LiBr system (11,20) at the same time. In our previous papers, the optimum mixing ratios (21,22) of absorbents used for these two ternary systems and vapor pressure (22,23), heat capacity (21,24), heat of mixing (25), and solubility (26) data for the individual absorbent solutions at the optimum mixing ratios were reported.…”

Section: Introductionmentioning

confidence: 99%

Densities, viscosities, and surface tensions for the two ternary systems water + lithium bromide + lithium iodide + lithium chloride + lithium nitrate

Iyoki¹,

Iwasaki²,

Kuriyama³

et al. 1993

J. Chem. Eng. Data

Self Cite

View full text Add to dashboard Cite

Heat Capacity for the Water + Lithium Chloride + Lithium Nitrate System at Temperatures from 283.15 to 433.15 K

Cited by 5 publications

References 9 publications

Heat Capacities of Ethylamine + Water + Lithium Bromide from 313.15 K to 373.15 K

Heat Capacities of Ethylamine + Water + Lithium Bromide from 313.15 K to 373.15 K

District Heating of Buildings by Renewable Energy Using Thermochemical Heat Transmission

Densities, viscosities, and surface tensions for the two ternary systems water + lithium bromide + lithium iodide + lithium chloride + lithium nitrate

Contact Info

Product

Resources

About